Prokaryotic cells typically have diameters ranging from 0.1 to 5.0 micrometers (m) and are substantially smaller than eukaryotic cells, which typically have diameters ranging from 10 to 100 m.
What is prokaryotic cell?A single-celled creature called a prokaryote lacks a nucleus and other membrane-bound organelles. The term prokaryote is derived from the Greek and v. Prokaryotes were classed into the empire Prokaryota in the two-empire concept developed by Édouard Chatton. A nucleoid area, DNA and RNA as genetic material, ribosomes that create proteins, and cytoplasm that contains a cytoskeleton that organizes cellular components are all present in all prokaryotic cells. Prokaryotic creatures, on the other hand, are a tremendously varied group of organisms that exist in a wide range of forms and sizes.
Here,
Prokaryotic cells typically have diameters ranging from 0.1 to 5.0 micrometers (m), making them substantially smaller than eukaryotic cells, which typically have dimensions ranging from 10 to 100 m.
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For each of the following reactions, identify the Lewis acid and the Lewis base.
Part A
2Cl−+BeCl2→BeCl2−42Cl−+BeCl2→BeCl42−
BeCl2 is a Lewis acid, BeCl2−is a Lewis base.
BeCl2 is a Lewis acid, Cl− is a Lewis base.
Cl-is a Lewis acid, BeCl2−4s a Lewis base.
Cl−is a Lewis acid, BeCl2is a Lewis base.
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Part B
Mg2++6H2O→Mg(H2O)2+6Mg2++6H2O→Mg(H2O)62+
Mg2+ is a Lewis acid, Mg(H2O)2+6is a Lewis base.
Mg2+ is a Lewis acid, H2O is a Lewis base.
H2O is a Lewis acid, Mg2+ is a Lewis base.
H2O is a Lewis acid, Mg(H2O)26+is a Lewis base.
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Part C
SO3+OH−→HSO−4SO3+OH−→HSO4−
SO3 is a Lewis acid, OH−is a Lewis base.
OH−is a Lewis acid, SO3 is a Lewis base.
SO3is a Lewis acid, HSO−4 is a Lewis base.
HSO−4is a Lewis acid, OH− is a Lewis base.
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Part D
F−+BF3→BF−4
BF3is a Lewis acid, F−is a Lewis base.
BF−4is a Lewis acid, F− is a Lewis base.
F− is a Lewis acid, BF3 is a Lewis base.
BF3 is a Lewis acid, BF−4is a Lewis base.
Each Lewis acid-base reaction has an acid and a base, which you should identify. Decide which reactant in each equation is an electron-pair donor and which reactant is an electron-deficient reactant.
How can a Lewis base and acid be distinguished?Each Lewis acid-base reaction has an acid and a base, which you should identify. Decide which reactant in each equation is an electron-pair donor and which reactant is an electron-deficient reactant. Lewis acid, on the other hand, is the electron-deficient chemical, and Lewis base is the other.Lewis acid is known as BF 3.Lewis bases include H2O and the ions BF3, H+, and NH4+.A pair of electrons that can establish a bond to another atom is sought after when you draw the Lewis structure. A molecule or ion that has the ability to give up two electrons in order to establish a bond is known as a Lewis base. A Lewis base can be any atom, ion, or molecule that has one lone pair of electrons.To learn more about Lewis acid-base reaction refer to:
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Rutherford's famous gold foil experiments shot heavy particles at a thin sheet of gold foil. What did he observe, and why did these observations eventually result in the addition of a nucleus to the atomic model
Some of the heavy particles bounced off the foil, because there is a dense, positive area in the atom.
Rutherford's famous gold foil experiments shot heavy particles at a thin sheet of gold foil. The conclusion from Rutherford’s gold foil experiment:
1. Most of the particles passed through the undeflected proving that most of the atom is empty space.
2. Some of the particles deflected by small angle proving that the center of the atom has a positive charge.
3. Also some of the particles travel back from the foil or bounced off the foil proving that the entire mass of the atom is located in the center also known as the nucleus of the atom. Thus, led to the discovery of the atomic nucleus.
Your question is incomplete most probably your full question was
Rutherford's famous gold foil experiments shot heavy particles at a thin sheet of gold foil. What did he observe, and why did these observations eventually result in the addition of a nucleus to the atomic model? Some of the heavy particles bounced off the foil, because there are positive particles spread throughout the atom. Some of the heavy particles bounced off the foil, because there is a dense, positive area in the atom. The heavy particles all passed straight through the foil, because the atoms are mostly empty space. The heavy particles all bounced off the foil, because the subatomic particles have mass and volume.
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HELPPP!!What are valence electrons and why are they important? How do electronegativity and ionization energy impact an element’s ability to lose or gain valence electrons?
Valence electrons tell about the properties of the element that is being discussed. If an atom is electronegatiove then it woulod have more electrons in the outermost shell. The elements that have fewer electrons in the outermost shell has a lower ionization energy.
What are the valence electrons?We know that the valence electrons has to do with the electrons that can be seen to occupy the outermost shell of the atom. We know that the atom is the smallest particle of the substnace that can be able to take part in a chemical reaction. Now there are many electronic levels that can be found in the atoms of an element.
The valence electrons can tell us the number of the electrons that are in an atom and they can also be able to tell us the chemical reactivity of the atom that we have in the particular case.
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Which two pieces of protective equipment are most important for preventing chemicals from spilling on skin
c. lab coat and gloves two pieces of protective equipment are most important for preventing chemicals from spilling on skin
The body's largest organ is the skin. The integumentary system is composed of the skin and its analogues (hair, nails, perspiration, and oil glands). The skin's primary role is protection. It safeguards the body against environmental dangers like bacteria, chemicals, and temperature. The epidermis is the layer of skin that is visible. The softer inner layers are safeguarded by this. A number of cell "sheets" make up the epidermis. New epidermal cells are created on the bottom sheet. New skin cells are pushed forward to replace those that are being shed off the surface along with old, dead skin cells.
Which two pieces of protective equipment are most important for preventing chemicals from spilling on skin?
a. goggles and first aid kit
b. safety shower and eye wash station
c. lab coat and gloves
d. gloves and fume hood
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mx(s) + crystal lattice energy → m+(g) + x- (g) is the reaction for crystal lattice energy.
The reaction for crystal lattice energy is when a metal atom, M, in its ground state and in the solid state reacts with an anion, X-, to form a cation, M+, and an anion, X-.
The reaction for crystal lattice energy is when a metal atom, M, in its ground state and in the solid state reacts with an anion, X-, to form a cation, M+, and an anion, X-. The reaction can be represented as:
M(s) + X–(g) → M+(g) + X–(g)
1. A metal atom, M, in its ground state and in the solid state is present.
2. This metal atom reacts with an anion, X-, in the gaseous phase.
3. As a result of the reaction, a cation, M+, is formed.
4. Also, an anion, X–, is formed.
5. This reaction is known as the reaction for crystal lattice energy
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Which one of the following is a strong acid? A) HNO2 B) HE C) HCIO4 D) HC2H3O2
The acid that is the strongest among the given options is HClO4. It is a strong acid which means it fully dissociates into H+ and ClO4- in water solution.
HNO2 is a weak acid. It only partially dissociates in water solution. HE is not a chemical compound, its not a acid. HC2H3O2 is a weak acid, also known as acetic acid.An acid is a type of chemical compound that can donate protons (H+) to solutions. When an acid is dissolved in water, it dissociates, or breaks apart, into its component ions. For example, when hydrochloric acid (HCl) is dissolved in water, it dissociates into H+ ions and Cl- ions. The ability of an acid to donate protons is known as acidity. Acids can be classified into two main categories: strong acids and weak acids.A strong acid is an acid that dissociates almost completely in water solution, meaning that it releases a large number of protons into the solution. Examples of strong acids include hydrochloric acid (HCl), sulfuric acid (H2SO4) and nitric acid (HNO3). A weak acid is an acid that dissociates only partially in water solution, meaning that it releases a relatively small number of protons into the solution. Examples of weak acids include acetic acid (CH3COOH) and carbonic acid (H2CO3).
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Select the oxidizing or reducing agent(s) that you would use to carry out the transformation below: OH H;c OCH; OH CH;OH H;c NaBH4 PCC RCOzH 0i 03, " CHzOHii (CH3)zS 0 Hz Ni 0 Hz, Pd/CaSO4, quinoline 0iLiAIH4; ii. HzOt Li, NH3 OiKMnO, HzO, KOH,heat; ii. H3Ot
NaBH4 can be used as a reducing agent to reduce an alkoxide to an alcohol. The mechanism involves a one-electron transfer from NaBH4 to the alkoxide, forming a reduced intermediate, which is then protonated by the solvent to yield the desired alcohol product.
Oi. NaBH4; ii. H3O+.
Oi: NaBH4 can be used as a reducing agent to reduce an alkoxide to an alcohol.
ii: H3O+ can be used as an oxidizing agent to oxidize an alcohol to an aldehyde.
NaBH4 can be used as a reducing agent to reduce an alkoxide to an alcohol. The mechanism involves a one-electron transfer from NaBH4 to the alkoxide, forming a reduced intermediate, which is then protonated by the solvent to yield the desired alcohol product. This reaction is often accompanied by an acid-base reaction between the NaBH4 and the solvent. H3O+ can be used as an oxidizing agent to oxidize an alcohol to an aldehyde. The mechanism involves a one-electron transfer from the alcohol to H3O+, forming an oxidized intermediate, which is then protonated by the solvent to yield the desired aldehyde product. This reaction is often accompanied by an acid-base reaction between the H3O+ and the solvent.
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A. How long did it take for the Moon to go around Earth? B. How long did it take for the flag to rotate once in a full circle? 6. Analyze: What do you notice about these two time intervals?
It takes the Moon approximately 27.3 days to orbit the Earth, and It takes the flag approximately 4 seconds to rotate once in a full circle.
Analyzing the two time intervals, it is clear that the Moon's orbit of the Earth is much longer than the time it takes the flag to rotate in a full circle. This is because the Moon is much farther away from the Earth than the flag is from the ground, so it requires much more time for the Moon to complete one full orbit around the Earth.
The Moon's orbit of the Earth is much longer than the time it takes the flag to rotate in a full circle because the Moon is much farther away from the Earth than the flag is from the ground. This is due to the difference in the gravitational forces that affect the Moon and the flag. The Moon is subject to the gravitational pull of the Earth, which causes it to orbit around the Earth.
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1.018g of freon- 113 gas is trapped in a 145 ml container at 760 mmhg and 50.0 c. what is the molar mass of freon- 113?
1.018g of freon- 113 gas is trapped in a 145 mL container at 760 mmHg and 50.0 C. The molar mass of freon- 113 is 186.1 g/mol
We can first use the ideal gas law equation to get the number of moles.
PV = nrT
where
P is pressure = 760 mmHg / 760 mmHg/atm = 1 atm
V is volume = 145 x 10⁻³ L
n is number of moles
r is universal gas constant= 0.08206 LatmK⁻¹mol⁻¹
T is temperature in Kelvin = 50 °C + 273 = 323 K
we can subtitutes the value to the formula of gas ideal
PV = nrT
1 atm x 145x 10⁻³ L = n x 0.08206 LatmK⁻¹mol⁻¹ x 323 K
n = 0.00547mol
Molar mass of freon 113 can be calculate as follows
molar mass = mass / number of moles
molar mass = 1.018 g / 0.00547 mol = 186.1 g/mol
molar mass of freon 113 gas is 186.1 g/mol
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Q 5.67: Identify the relationship between the following compounds.
Et
Et
HOH2CH
Br
HOW
CH3
Br
A different compounds
B constitutional isomers
C diastereomers
D enantiomers
Compound I and II are enantiomers .
In general, Enantiomers are considered as a pair of molecules that is present in two forms or mirror images of one another but they are not superimposed upon each other. so, Compounds that are mirror images of each other and are not superimposable are termed enantiomers.
Hence, the easiest way to find an enantiomer is by analyzing the molecules if they are mirror images of each other. Enantiomers must be mirror images. Other important properties of Enantiomers includes that they should have identical melting and boiling points, density, dissociation strengths and solubilities.
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If i shake ethanol and oil in a test tube and then add water what would be my result?
If you shake ethanol and oil in a test tube and then add water, you would likely see the water and ethanol mix together, while the oil remains separate.
This is because ethanol and water are miscible, meaning that they can mix together in any proportion to form a homogenous solution. Oil, on the other hand, is immiscible with water, meaning that it does not dissolve in water and will instead form a separate layer on top of the water.
What is the experiment about?When ethanol and water are mixed together, the ethanol molecules become surrounded by water molecules, and the mixture becomes homogenous.
This is because the ethanol molecules are polar, meaning that they have a positive end and a negative end, and the water molecules are also polar, with a positive end and a negative end. The positive end of the ethanol molecule is attracted to the negative end of the water molecule and vice versa, so the two substances can mix together easily.
Oil, on the other hand, is nonpolar, meaning that it does not have positive and negative ends. As a result, it does not interact with water molecule
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When a solution of a certain gadolinium salt is electrolyzed with a current of 1.0 A for 2.0 h, 0.025 mol of Gd metal forms. Calculate the charge on the gadolinium ion in the salt.
Mass of [Co(NH3)5Cl]Cl2 used: 0.9785 g
Mass of [Co(NH3)5ONO]Cl2 obtained via synthesis: 0.5893g
Reaction:
[CO(NH3)5Cl]2+
+
H2O
[CO(NH3)5H2O]3+
+ CI
[CO(NH3)sH2O]3+
+ NO2
[CO(NH3).ONO]2+
+
H2O
Calculate percentage yield of final product: [Co(NH3)5ONO]Cl2
The percentage yield is the same as the theoretical yield. We got it equal to 2.137, which is equal to 85%.
Calculate percentage yield of final product: [Co(NH3)5ONO]Cl2?
Yield is calculated as: Yield = Net Realized Return / Principal Amount. For example, the gains and return on stock investments can come in two forms. First, it can be in terms of price rise, where an investor purchases a stock at $100 per share and after a year they sell it for $120.The low-yield bond is better for the investor who wants a virtually risk-free asset, or one who is hedging a mixed portfolio by keeping a portion of it in a low-risk asset. The high-yield bond is better for the investor who is willing to accept a degree of risk in return for a higher return.The three key types of yield curves include normal, inverted, and flat. Upward sloping (also known as normal yield curves) is where longer-term bonds have higher yields than short-term ones.To learn more about final product refers to:
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In a constant-pressure process, ΔH = 0. What can you conclude aboutΔE, q, and w?
At constant pressure if ΔH is equal to zero, then q also will be zero. And work done W and internal energy change ΔE = - PΔ V.
What is enthalpy ?The enthalpy of a system can be defines as the sum of the internal energy of the system and its addition pressure -volume energy of occupying space.
H = E + PV
Then change in enthalpy ΔH = ΔE + PΔ V
Now, if ΔH = 0,
ΔE = - PΔ V.
According to first law of thermodynamics,
ΔE = q + w
then q + w = - PΔ V
where w = - PΔ V
therefore, q = 0.
From this, the enthalpy change is equal to the heat added at constant pressure.
ΔH = q at constant pressure.
hence q = 0.
ΔE = w =- PΔ V.
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What type(s) of intermolecular forces are expected between BeCl2 molecules? ball & sticky + labels Indicate with a Y (yes) or an N (no) which apply. dipole forces induced dipole forces hydrogen bonding
Hydrogen iodide (HI) is a diatomic molecule belonging to the hydrogen halide family. It exists as a colorless gas with a pungent odor at room temperature.
Explain about BeCl2 molecules?Beryllium chloride, BeCl2, is a solid substance consisting of long (essentially infinite) chains of atoms with Cl atoms in bridge positions. However, if the solid is heated, it forms a vapor of BeCl2 molecules.BeCl2 molecular geometry is said to be a linear one with a bond angle of 180o. It is a non-polar molecule because they have less attraction between each other.Beryllium chloride appears as white or yellow crystals, soluble in many polar solvents such as alcohol, ether, benzene, and pyridine. It has a chemical formula of BeCl2.In this tutorial, we will discuss Beryllium chloride (BeCl2) lewis structure, molecular geometry, electron geometry, hybridization, polar or nonpolar, its bond angle, etc.Beryllium chloride has a hexagonal crystal structure. BeCl2 is prepared by direct reaction of elemental beryllium with chlorine at high temperatures.⇒ Be + Cl2 → BeCl2To learn more about BeCl2 molecules refer to:
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The following is a skeleton of a molecular anion having the overall formula C7H6NO–. The H atoms are not shown. Starting with the structure drawn below, complete the Lewis structure by adding all H atoms, valence electrons, and π bonds. This structure will have a –1 formal charge on the oxygen.
The Lewis structure for C7H6NO is given below:
What is a Lewis structure?
A Lewis structure, also known as a Lewis dot diagram, is a way to represent the bonding and non-bonding electrons in a molecule. It is named after Gilbert N. Lewis, who introduced it in 1916. A Lewis structure shows the chemical symbol of each atom in the molecule and the electrons that are involved in the chemical bonds. It is used to predict the molecular geometry, reactivity, and other chemical properties of a molecule.
The skeleton structure provided is of an anion, C7H6NO-, which has a -1 formal charge on the oxygen atom. To complete the Lewis structure, we will add the missing hydrogen atoms, valence electrons, and pi bonds. Here is one possible Lewis structure for C7H6NO-:
H
|
C-C-C-C-C-C-C
| |
N-C O=C
| |
H H
In this Lewis structure, the oxygen atom has a negative formal charge, indicating that it has one extra electron in its valence shell. The nitrogen atom has a formal charge of zero, indicating that it has a complete octet in its valence shell.
The carbon atoms have a formal charge of zero, indicating that they also have a complete octet in their valence shell. There are two pi bonds in the molecule, one between the nitrogen and the carbon atoms, and another between the double-bonded oxygen and the carbon atoms. The molecule has a total of 36 valence electrons.
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A) Draw a Lewis diagram for SO2F2 in which all atoms have a formal charge of zero .
B) Draw a Lewis structure for SO2F2 in which the octet rule is satisfied on all atoms and show all NONZERO formal charges on all atoms.
C) Which structure would best represent bonding in the molecule? Smallest formal charges or octet rule satisfied for all atoms?
32 valence electrons we can calculate how many electrons can be distributed throughout the molecule by adding up the valence electrons of all the atoms.
How many electrons of valence do you think SO2F2 has?32 valence electrons We can calculate how many electrons can be distributed throughout the molecule by adding up the valence electrons of all the atoms, S = 6 + (6 x 2) + (7 x 2) = 32 valence electrons overall.The periodic table's third period, which includes S, allows the sulphur atom to increase its octet, which contains more than 8 electrons. In light of the octet rule, socl2 is a stable chemical.Due to the fact that formal charge correctness is typically more guaranteed and octet rule has exceptions, formal charge accuracy should be given priority over having a full octet.To learn more about valence electrons refer to:
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How do you think the graph might change if the temperature was held constant at a high temperature, say 400 K?
The graph plotted between pressure and volume to be rectangular hyperbola. The volume at each added mass will increase and the graph will be shifted up at a high temperature 400K.
Why does volume increase as temperature rises?The atoms in your material vibrate more as a result of a rise in temperature, which raises internal energy. As a result, they move farther from their equilibrium position and require more volume or space to do so. The object's overall volume will increase.
What connection exists between volume and temperature?In layman's words, the volume of a fixed mass of gas is exactly proportional to temperature at constant pressure. The volume of a fixed mass of a gas reduces when it is cooled and increases when the temperature is raised.
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Plot a point for each possible mass to create a graph showing the relation between pressure and volume.
How do you think the graph might change if the temperature was held constant at a high temperature, say 400 K?
Properties both sodium and manganese have
Molar Volume
Show all work or no credit!!
I. Assume all gases are at STP. Convert moles of gas to liters of volume
1. 0.10 moles of Hydrogen gas
2. 1.5 moles of Na
3. 8.4 moles of NH3
3.75 moles of Br
At STP, the molar volume of a gas is equal to 22.41 L. Thus, the volume of each of these gases are their number of moles multiplied by 22.414.
What is molar volume ?The molar volume of a substance is the space occupied by one mole of the substance. One mole of every substance contains Avogadro number of atoms.
The STP condition is the condition of standard temperature and pressure. The temperature of 298 K and 1 atm pressure is called the standard condition.
At STP one mole of every gas has a volume of 22.414 L.
Therefore, at STP the volume of 0.10 moles of hydrogen gas = 0.10 × 22.4 = 2.24 L
Volume of 1.5 moles Na = 1.5 × 22.4 = 33.6 L
volume of 8.4 moles of ammonia = 8.4 × 22.4 = 188 L
volume of 75 moles Br = 75 × 22.4 = 1680 L.
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The electron-pair geometry around the P atom in PO(OH)3 is There arelone pair(s) around the central atom, so the geometry of PO(OH)3 is
The electron-pair geometry around the P atom in PO(OH)3 is tetrahedral.There are zero lone pairs around the central atom, so the molecular geometry of PO(OH)3 is tetrahedral.
What is molecular geometry?Molecular geometry can be defined as a three -dimensional arrangement of atoms which constitute the molecule.It includes parameters like bond length,bond angle and torsional angles.
It influences many properties of molecules like reactivity,polarity color,magnetism .The molecular geometry can be determined by various spectroscopic methods and diffraction methods , some of which are infrared,microwave and Raman spectroscopy.
They provide information about geometry by taking into considerations the vibrational and rotational absorbance of a substance.Neutron and electron diffraction techniques provide information about the distance between nuclei and electron density.
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When the equation __Ca3N2 + __H2O ? __Ca(OH)2 + __NH3 is balanced, the coefficient of H2O is:
a. 3
b. 12
c. 2
d. 6
e. none of the above
The equation Ca3N2 + H2O → Ca(OH)2 + NH3 needs to be balanced in order to be solved.
1. Balance the elements on the left side of the equation
Ca3N2 + H2O → Ca(OH)2 + NH3
2. Multiply the coefficients of the left side of the equation to make them equal to the right side:
3Ca3N2 + 6H2O → 3Ca(OH)2 + 2NH3
3. The coefficient of H2O is 6.
The equation Ca3N2 + H2O → Ca(OH)2 + NH3 needs to be balanced in order to be solved. To balance the equation, the coefficients of the elements on the left side of the equation need to be multiplied until they are equal to the coefficients of the elements on the right side. After the equation is balanced, the coefficient of H2O is 3.
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Which can not be separated into simpler substances or converted into another substance by chemical processes
An element is a substance that cannot be broken down further into simpler components by a chemical reaction.
Which of the following Cannot be separated into a simpler substance?An element is a pure substance that cannot be separated into simpler substances. Elements are sterling substances that cannot be broken down into simpler substances by usual chemical means. Hydrogen and oxygen, on the other hand, cannot decay into simpler substances
Water can also be divided into smaller molecules by chemical means, so it can also be restricted as a substance that can be separated into simpler substances only by the chemical way. They are therefore elementary, or easy, chemical substances - elements.
So we can conclude that Since elements are pure substances, so they cannot be part of two or easy substances by chemical methods.
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_____solutions are good conductors of electricity. heterogeneous gaseous ionic covalent
ionic solutions are good conductors of electricity. heterogeneous gaseous ionic covalent
Any sample of a solid, liquid, or gaseous mixture is said to be homogenous if the component ratios are constant. They are evenly dispersed in terms of their constituent parts, and the entire solution has a consistent look.
Components of a heterogeneous mixture have proportions that differ across the sample as a whole. In a heterogeneous mixture, the constituent parts may be seen and are not uniformly distributed. Any mixture with an uneven composition is referred to as a heterogeneous mixture. The components (sand and gravel) are clearly visible in a bucket but are not uniformly dispersed. That makes this a "heterogeneous blend."
___solutions are good conductors of electricity.
lonic
Covalent
Heterogeneous
Gaseous
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What do these two changes have in common?
an engine using gasoline to power a car
cellular respiration
Select all that apply.
Both are only physical changes.
Both are chemical changes.
Both converse mass.
Both are caused by heating.
An engine using gasoline to power a car and cellular respiration are both chemical changes. Option 2.
What are chemical changes?Chemical changes are changes that happen to substances that completely alter the chemical properties of the substances, often in an irreversible way.
Gasoline burns in the air to produce energy that is used to power engines. The hydrocarbon burns to produce carbon dioxide or carbon monoxide and water as by-products.
During respiration, carbohydrates are broken down to produce energy. Depending on the type of respiration, different products are produced that are chemically unique from the initial carbohydrates.
Thus, both gasoline and carbohydrates have their chemical properties irreversibly altered during the process of burning and respiration respectively. In other words, both processes are chemical changes.
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Can someone please help me with this question please?
Answer:
Metal Salt is created therefore hydrogen gas is created. The solution should be H2SO4 + ZN = ZnSO4+H2
Explanation:
Hope this helps out have a great day!
A metal that forms an oxide of formula R2O3. O cd O Sb О Ті O Sn
The metal that forms an oxide of formula R2O3 would be Tin (Sn). Tin (Sn) is a chemical element with the symbol Sn and atomic number 50.
It is a post-transition metal in group 14 of the periodic table. Tin forms an oxide with the formula SnO2. When heated, it oxidizes to form an oxide with the formula R2O3, which is SnO3.
The metal that forms an oxide with the formula R2O3 is Tin (Sn).
The metal that forms an oxide of formula R2O3 would be Tin (Sn). Tin (Sn) is a chemical element with the symbol Sn and atomic number 50.
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Equation for the formation of alpha-lactose
[tex]C_{(s)}+H_{2}_{(s)} +O_{2_{(g)} }[/tex] ⇒ [tex]C_{12} H_{22} O_{11_{(s)} } +H_{2_{(g)} } +O_{2_{(g)} }[/tex].
Dehydrating -hydrate in a vacuum of 6–80 mm Hg at temperatures between 100–190 °C and crystallizing it with a suitable solvent, particularly dry methanol or 95% pure ethanol, yields a stable form of -lactose.
The disaccharide sugar lactose, with the chemical formula C12H22O11, is produced by the combination of the galactose and glucose subunits. In milk, lactose makes up between 2-8%. (by mass). The disaccharide lactose is a beta-D-galactose coupled to an alpha-D-glucose that is present in milk. These two sugars are connected by a beta-1,4-glycosidic bond.
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In the lab, a substance is experimentally determined to be 44.42 g tin and 119.58 g bromine. What is the percent composition by mass of each element in this compound?
Answer:
To calculate the percent composition by mass of each element in this compound, we first need to determine the total mass of the compound. We can do this by adding together the mass of tin and the mass of bromine:
44.42 g + 119.58 g = 164 g
Then, we divide the mass of each element by the total mass of the compound, and multiply by 100 to express the answer as a percentage.
The percent composition by mass of tin: (44.42 g / 164 g) x 100 = 27.01%
The percent composition by mass of bromine: (119.58 g / 164 g) x 100 = 72.99%
So, the compound is 27.01% tin and 72.99% bromine by mass.
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The correct question is what is the percentage composition of Tin and Bromine.
What is the mass, in grams, of 0.0287 mol0.0287\,\text {mol}0.0287mol0, point, 0287, start text, m, o, l, end text of sucrose
This sample of sucrose has a mass of 9.82 grams.
The mass of sucrose can be calculate as follows:
The mass molar of sucrose = 342.30 g/mol
mass molar can be calculated by the number of atoms is multiplied by the atomic mass of each element. The molecular mass of the molecule will be the sum.
The moles of this sucrose sample = 0.0287 moles
Mass = moles * molar mass
Mass = 0.0287 moles X 342.30 g/mol
Mass of sucrose = 9.82401 grams
This quantity has the following three significant figures when expressed as:
sucrose mass equals 9.82 grams
This sucrose sample weighs 9.82 grams.
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