What is the name for C2I3
Answer: The correct name for the compound [tex]C_2I_3[/tex] is, Dicarbon triiodide.
Explanation:
[tex]C_2I_3[/tex] is a covalent compound because in this compound the sharing of electrons takes place between carbon and iodine.. Both the elements are non-metals. Hence, it will form covalent bond.
The naming of covalent compound is given by:
The less electronegative element is written first.
The more electronegative element is written second. Then a suffix is added with it. The suffix added is '-ide'.
If atoms of an element is greater than 1, then prefixes are added which are 'mono' for 1 atom, 'di' for 2 atoms, 'tri' for 3 atoms and so on.
Hence, the correct name for the compound [tex]C_2I_3[/tex] is, Dicarbon triiodide..
A tire is inflated physical or chemical ?
Answer: physically
Explanation: it's a physical change because the air that fills it up does not affect its chemical compound like I'd you mix metal in salt water
Queston
Which equation shows how to calculate how many grams (g) of KOH would
be needed to fully react with 4 mol Mg(OH)2? The balanced reaction is:
MgCl2 + 2KOH → Mg(OH)2 + 2KCI
OA. mol Mg(OH),
2 mol KOH
mol Mg(0H),
56.10 g KOH
1 mol KOH
2 mol KOH
1 mol Mg Cl,
56.10 g KOH
1mol KOH
OB. mol Mgch
1
1mol Mg(OH),
2 mol KOH
1mol Ma(0H),
56.10 g KOH
1 molkOH
mol Mg (OH,
1 mol KOH
2 mol Ma(OH)
56 10 g KOH
1mol KOH
OD.
Answer:
C
Explanation:
We know that the molar mass of KOH is 56 gmol-1
Molar mass of Mg(OH)2 is 58.31 g/mol
Now; the balanced reaction equation is; MgCl2 + 2KOH → Mg(OH)2 + 2KCI
Hence;
2 moles of KOH yields 1 mole of Mg(OH)2
4 moles of KOH yields;
4 moles of KOH/1 mol * 1 mole Mg(OH)2 /2 moles KOH * 58.31 g Mg(OH)2 / 1 mole Mg(OH)2
So option c is correct
Answer:
4mol MG(OH)2/1 * 2mol KOH/1 mol MG(OH2) * 56.10g KOH/1 mol KOH
Explanation:
Took the test
A student is trying to determine the density of a piece of metal. She uses a balance and finds that the mass of the piece of metal is 15.36 g. To determine the volume of the metal she fills a graduated cylinder to 30.0 mL and then drops the piece of metal into the graduated cylinder. The final volume of the metal 34.1 mL. What is the density of the piece of metal
Answer:
3.746 g/mL
Explanation:
Mass of metal = 15.36 g
Initial Volume = 30.0 mL
Final Volume = 34.1 mL
Volume of metal = Final Volume - Initial Volume = 34.1 mL - 30.0 mL
Volume of metal = 4.1 mL
Density = ?
The relationship between the values is given as;
Density = Mass of metal / Volume of metal
Inserting the values;
Density = 15.36 / 4.1 = 3.746 g/mL
The density of the piece of metal is 3.746 g/ml.
How to find the density of any metal?Given the mass of metal is 15.36 g
The initial volume of a cylinder is 30.0 ml
The final volume after putting metal in it is 34.1ml
Step 1- To find the volume:
The volume of metal = Final Volume – Initial Volume 30.0 mL
Volume of metal = 34.1 – 30.0 = 4.1 ml
Volume of metal = 4.1 mL
Step 2- Find the Density:
Density = Mass of metal is divided by the Volume of metal
[tex]\bold{Density = \dfrac{15.36 }{4.1} =3.746 g/ml}[/tex]
Thus, the density is 3.746 g/ml.
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A patient is prescribed 100mg/day of antibiotic for 2 weeks. The antibiotic is available in vials that contain 20mg/vial of the drug. How many vials are necessary for the entire treatment?
Question 9 of 10
What is stoichiometry used for?
A. Calculating the mass of a product from the number of moles of
B. Calculating the molarity of the limiting reagent used in a reaction
DC. Calculating the actual yield of a product in a chemical reaction
D. Calculating the weighted average atomic mass of an element
reactants
Stoichiometry is used for calculating the mass of a product from the number of moles of reactants. The correct option is A.
What is stoichiometry?
Stoichiometry is made up of two words, stoikhein, which means element, and metron, which means measure. Stoichiometry is a method of determining the data by using the knowledge of reactants and products.
There are five steps of stoichiometry that are the following:
Obtain all measurement information from the task.Change all measuring units to the same base units.Compose a thoughtful response.Ascertain the species' stoichiometry.Calculate the appropriate quantity in step five.Thus, the correct option is A. Calculating the mass of a product from the number of moles of reactant.
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An animal is an example of a/an-
A: tissue
B:cell type
C:organ
D:organism
Answer:
D
Explanation:
organism
Answer:
The answer should be organism
Which of the following is/are true regarding initial and maximal velocity of enzyme-mediated reactions?
a. At very low substrate concentrations, the initial velocity of an enzyme reaction will be lower than the maximal velocity of the enzyme reaction.
b. When an enzyme behaves with Michaelis-Menten kinetics, the initial velocity of that enzyme reaction changes with substrate concentration, but the maximal velocity of that particular enzyme remains the same at a constant enzyme concentration and identical reaction conditions
c. Initial velocity is maintained until maximal velocity is reached.
d. The initial velocity is determined by the slope of the line at the beginning of a reaction when one plots the experimental results of reaction time versus product formed. Maximal velocity is then determined by when the initial velocity no longer significantly changes with increasing substrate concentration.
Answer:
a. True
b. True
c. False
d. True
Explanation:
a). A a very low substrate concentration , [tex]$S<< Km$[/tex]. Thus according to the Machaelis-Menten equation becomes
[tex]$V_0 = \frac{V_{max} \times [S]}{Km}$[/tex]
Here since the [tex]$V_0$[/tex] varies directly to the substrate concentration [S], the initial velocity is lower than the maximal velocity. Thus option (a) is true.
b). The Michaelis -Menten kinetics equation states that :
[tex]$V_0 = \frac{V_{max} \times [S]}{Km+[S]}$[/tex]
Here the initial velocity changes directly with the substrate concentration as [tex]$V_0$[/tex] is directly proportional to [S]. But [tex]$V_{max}$[/tex] is same for any particular concentration of the enzymes. Thus, option (b) is true.
c). As the substrate concentration increases, the initial velocity also increases. Thus option (c) is false.
d). Option (d) explains the procedures to estimate the initial velocity which is correct. Thus, option (d) is true.
How many liters of CO2 gas can be produced at 30.0 °C and 1.50 atm from the reaction of 5.00 mol of C3H8 and an excess of O2 according to the following equation? C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (g)
Answer:
249 L
Explanation:
Step 1: Write the balanced equation
C₃H₈(g) + 5 O₂(g) → 3 CO₂(g) + 4 H₂O(g)
Step 2: Calculate the moles of CO₂ produced from 5.00 moles of C₃H₈
The molar ratio of C₃H₈ to CO₂ is 1:3. The moles of CO₂ produced are 3/1 × 5.00 mol = 15.0 mol
Step 3: Convert "30.0°C" to Kelvin
We will use the following expression.
K = °C + 273.15
K = 30.0°C + 273.15 = 303.2 K
Step 4: Calculate the volume of carbon dioxide
We will use the ideal gas equation.
P × V = n × R × T
V = n × R × T/P
V = 15.0 mol × 0.0821 atm.L/mol.K × 303.2 K/1.50 atm
V = 249 L
How can both the pitcher and the glass contain the same volume of iced
tea?
Answer: $6,600[tex]\alpha \sqrt[n]{x} \lim_{n \to \infty} a_n[/tex]
Explanation:
In a chemical formula, the number of each type of atom in the compound is shown by numbers called what?
Answer: Subscripts
Explanation: Those are the little numbers next to each atom in a chemical formula.
HELP PLEASE
A sudden gust of wind increases the velocity of a sailboat relative to the water surface from 3.0m/s over a period of 30.0s. Using the formula a=change in velocity /t, what is the average acceleration of the sailboat?
•2.5m/s2
•1.2m/s2
•25m/s2
•0.083m/s2
( the 2's are exponents)
Answer:
average velocity for the time interval from t = 2 s to t = 4 s? ... fractional difference in the two methods when a steady wind blows along the car's route and the ... weight, but when the film reaches the drop, the drop's water suddenly ... boat, moving with constant velocity, that is 12 m from the point of impact when the key is.
Explanation:
ABOVE
The average acceleration of the sail boat is 0.083 m/s². Thus option d is correct.
What is acceleration?Acceleration is defined as the rate of change of velocity of an object with respect to time.
It is a vector quantity.
Acceleration can also be defined as the velocity change rate over time, in terms of both speed and direction
Average acceleration is defined as the rate of change of velocity of an object for the particular interval of time.
Average acceleration can also be defined as the change in velocity divided by the time elapsed.
It is measured in meter per second.
Average acceleration = Change in velocity / time
= 5.5 - 3.0 / 30.0
= 0.083 m / s²
Thus, the average acceleration of the sail boat is 0.083 m/s². Thus option d is correct.
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Your question is incomplete, but probably your complete question was
A sudden gust of wind increases the velocity of a sailboat relative to the water surface from 3.0m/s to 5.5m/s over a period of 30.0s. Using the formula a=change in velocity /t, what is the average acceleration of the sailboat?
•2.5m/s2
•1.2m/s2
•25m/s2
•0.083m/s2
8. As the temperature of a mixture increases, one part of the mixture may 2 points
melt while the other parts remain solid. *
True
Or
False
Answer:
It's false
Explanation:
Mixtures are always combinations of the same compounds that are at different states.
1pt Copper chloride and aluminum react to produce
aluminum chloride and copper. Which of the
following is the correctly balanced chemical
equation for this reaction?
O A. CuCl, + Al -> AICI, + u
O B. 3CuCl, + Al -> AlCl, + 2Cu
OC. 3CUCI, + 2Al -> 2AICI, + 3Cu
OD. CuCl, + 3Al -> AICI, + 2Cu
Answer:
None of the above
but it must be:
for Copper(I)chloride
3CuCl + Al ==> AlCl3 + 3Cu
for Copper (II) chloride
3CuCl2 + 2Al ==> 2AlCl3 + 3Cu
What is the mass of 1.84 mol NaCl? Give your
answer to the correct number of significant
figures. (Molar mass of NaCl = 58.44 g/mol)
1.84 mol NaCl =
Answer:
108 g
Explanation:
Answer:
answer in picture
Explanation:
The compound ammonium phosphate is a strong electrolyte. Write the transformation that occurs when solid ammonium phosphate dissolves in water.
Answer:
(NH₄)₂SO₄(s) ---> 2NH₄⁺(aq) + SO₄⁻²(aq)
Explanation:
The compound ammonium phosphate is a strong electrolyte. - This means that ammonium phosphate fully ionizes - dissociates to positive and negative ions completely.
The ions formed when ammonium phosphate dissociates are; Ammonium ion NH₄⁺ and sulphate ion SO₄⁻²
The transformation is given in the equation;
(NH₄)₂SO₄ ---> NH₄⁺ + SO₄⁻²
Upon balancing;
(NH₄)₂SO₄(s) ---> 2NH₄⁺(aq) + SO₄⁻²(aq)
Write down the possible types of atomic
Orbitals of n=4
Answer:
2
Explanation:
because first shell ( k shell ) needs only 2 electron to complete its octet .
hope it helps
What is the molarity of a solution of 10% by mass cadmium sulfate, CdSO4 (molar mass = 208.46 g/mol) by mass? The density of the solution is 1.10 g/mL.
a. 0.528 M
b. 0.436 M
c. 0.479 M
d. 0.048 M
e. 22.9 M
Answer:
a. 0.528 M .
Explanation:
Hello!
In this case, since the given by-mass percent can be written as:
[tex]\frac{10gCdSO_4}{100g\ sol}[/tex]
By using the density and molar mass of the solute, cadmium sulfate, we can compute the molarity, by also making sure we convert from mL to L of solution:
[tex]M=\frac{10gCdSO_4}{100g\ sol}*\frac{1molCdSO_4}{208.46gCdSO_4} *\frac{1.10g\ sol}{1mL\ sol}*\frac{1000mL}{1L} \\\\ M=0.528M[/tex]
Thereby, the answer is a. 0.528 M .
Best regards.
The molarity of the solution of 10% by mass cadmium sulfate [tex](CdSO_4)[/tex] is approximately 0.479 M. The correct option is C.
To calculate molarity we need to find out how many moles of CdSO4 are present in the solution.
Given:
Mass of [tex]CdSO_4[/tex]= 10% by mass of the solutionMolar mass of [tex]CdSO_4[/tex] = 208.46 g/molDensity of the solution = 1.10 g/mLWe need to calculate the mass of [tex]CdSO_4[/tex]:
Mass of [tex]CdSO_4[/tex] = (10% / 100%) * Total mass of the solution
Mass of [tex]CdSO_4[/tex] = (10 / 100) * 1000 g (since the volume is 1 L, and the density is 1.10 g/mL)
Mass of [tex]CdSO_4[/tex] = 100 g
So, the number of moles of CdSO4:
Number of moles of [tex]CdSO_4[/tex] = Mass of CdSO4 / Molar mass of CdSO4
Number of moles of [tex]CdSO_4[/tex] = 100 g / 208.46 g/mol
Number of moles of [tex]CdSO_4[/tex] ≈ 0.479 moles
Then, we calculate the molarity of the solution:
Molarity = Number of moles of CdSO4 / Volume of the solution (in liters)
Molarity = 0.479 moles / 1 L
Molarity ≈ 0.479 M
Hence, the molarity of the solution of 10% by mass cadmium sulfate [tex](CdSO_4)[/tex] is approximately 0.479 M. The correct option is C.
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Phosgene is a highly toxic gas made up of carbon, oxygen, and chlorine atoms. Its density at 1.05 atm and 258C is 4.24 g/L. (a) What is the molar mass of phosgene
Answer:
Molar mass = 99 g/mol
Explanation:
Phosgene contains carbon, oxygen and chlorine atoms. Its molecular formular is; COCl2
The molar mass is given as the sum off the individual atomic mass of the elements in the compound.
Molar mass = C + O + 2Cl
Molar mass = 12 + 16 + 2(35.5)
Molar mass = 99 g/mol
A barium atom (Ba) would form its most stable ion by the 1. gain of one electron. 2. loss of one electron. 3. loss of 56 electrons. 4. gain of two electrons. 5. loss of two electrons.
By definition, the correct answer is option 5. A barium atom (Ba) would form its most stable ion by the loss of two electrons.
An ionic bond is produced between metallic and non-metallic atoms, where electrons are completely transferred from one atom to another. During this process, one atom loses electrons and another one gains them, forming ions. Usually, the metal gives up its electrons forming a cation to the nonmetal element, which forms an anion.
In other words, anions are negatively charged ions and are formed when metals gain electrons. Cations are positively charged ions and are formed when a metal loses electrons.
The electrostatic attraction between positives and negatives attracts the particles to each other and creates an ionic compound.
A barium (Ba) atom is a metal, so it loses 2 electrons to comply with the octet rule, which states that the atoms of the elements bond together in an attempt to complete their valence shell, leaving the atom stable with 8 electrons in its last shell and thus be stable.
Finally, the correct answer is option 5. A barium atom (Ba) would form its most stable ion by the loss of two electrons.
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https://brainly.com/question/14368735?referrer=searchResultshttps://brainly.com/question/3360830?referrer=searchResultsExplain how the direction of the arrow in the bond dipole symbol ( ) relates to the elec-tron density and the partial charges.
The complete question is shown in the image attached
Answer:
See explanation
Explanation:
In a molecule, the direction of the dipole moment also shows the direction of the shift in electron density. Let me give you an instance. In HCl, the dipole points towards the chlorine atom. This implies that the bond is polar and the chlorine atom accommodates the greater share of the electron density of the H-Cl bond. The negative partial charge rests on the more electronegative atom (chlorine in this case) while the partial positive charge rests on the more electropositive atom(hydrogen in this case). Recall that the difference in electron density between the two atoms creates this polarity.
Having said that much, let me come to the issue of electronegativity and bond polarity. The polarity of bonds depends on the electronegativity difference between atoms. I have just established that the H-Cl bond is polar owing to the difference in electronegativity between hydrogen and chlorine. If I replace the chlorine atom in the molecule with another hydrogen atom, the molecule is no longer polar because the difference in electronegativity of a H-H bond is zero.
Lastly, let me talk about electronegativity difference and bond character. The magnitude of electronegativity difference between atoms determines the bond character. If the electronegativity difference between bonding atoms is;
less than 0.4, the bond is a pure covalent bond
between 0.4 - 1.8, the bond is a polar covalent bond
greater than 1.8, the bond is a pure ionic bond
Group IA elements are very reactive metal . why
Answer:
Alkali metals are among the most reactive metals. This is due in part to their larger atomic radii and low ionization energies. They tend to donate their electrons in reactions and have an oxidation state of +1. ... All these characteristics can be attributed to these elements' large atomic radii and weak metallic bonding.
Explanation:Because they have just one valence electron, group 1 elements are very reactive. As a result, they are found in nature only in combination with other elements. Alkali metals are all solids at room temperature. ... From the top to the bottom of group 1, the elements have heavier, more reactive atoms.
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Endothermic change is when energy enters a system. True or false?
Answer:
I think its false im not sure
Explanation:
How would kinetic energy of the dominoes be affected if the first domino did not hit the second one?(((20 points)))
Answer:
Not affected.
Explanation:
Kinetic energy of the dominoes not affected if the first domino did not hit the second one because no kinetic energy is lost due to no collision. If the first domino hit the second one, its kinetic energy decreases and changes in other form of energy such as heat and sound energy etc. But when there is no collision occur, then there is no change in the kinetic energy of dominoes.
The IUPAC name of(CH3)2CHCH2CH=CH2
Answer:
4-Methyl-1-pentene
Explanation:
According to the International Union of Pure and Applied Chemistry (IUPAC), IUPAC nomenclature of organic chemistry is defined as the system of naming organic chemical compounds.
There are certain rules for naming organic chemical compounds as per IUPAC. The name of given (CH3)2CHCH2CH=CH2 will be based on the same rules.
At first find out the longest continuous chain and number the chain consecutively (preference given to double and single bonds), so numbering will start from right to left. the given chemical is 5 Carbon chain long.Then, identify the groups attached to this chain. Methyl is the only group attached to this chain at 4 Carbon.Assemble the name in alphabetical order using the full name using correct prefix and suffix.4-Methyl-1-pentene is the name of this chemical, as methyl is in 4th carbon position, Pent for 5 carbon chain and -ene (suffix) for one double bond).
Hence, the correct answer is "4-Methyl-1-pentene".
Aton Van Leeuwenhoek was the first scientist to discover prokaryotic organisms. These single-celled organisms lack a nucleus and other membrane bound organelles but do have a cell membrane, DNA, and even a cell wall. Choice one of the answer. A. All known living things are made up of one or more cells. B. All living cells come from pre-existing cells by division. C. A cell is the fundamental unit of structure and function in all living organisms. D. No answer text provided
Answer: a
Explanation:
5. Selenium-83 has a half-life of 25.0 minutes. How many minutes would it take for a 10.0
mg sample to decay and have only 1.25 mg of it remain?
Explanation:
10.0mg / 1.25mg = 8
1/8 of the original mass => 3 half-life phases
Hence it will take 25.0 min * 3 = 75.0min.
helpp pleasee.............
Answer:
it's answer is lithium and boron.
How do cells prepare for sexual reproduction?
A. Punnett Square B. Meiosis C. Mendel D. Trait
Answer:
Meiosis
Explanation:
They just split in four.
Air masses carry their own weather.
True
False
The question is number 8