The Photoelectron spectroscopy of different anions are as follows:
What is Photoelectron spectroscopy?
Photoelectron spectroscopy (PES) is an analytical technique used to determine the electronic structure of a molecule by measuring the kinetic energy and angular distribution of electrons emitted from the sample upon photoexcitation. The electrons are typically ejected from the valence shell of the atoms in the molecule, and the kinetic energy of the electrons is a measure of the binding energy of the electrons in the initial state.
Sorting the MOs according to their energies:
-0.53 Ry, -0.10 Ry, 1.18 Ry
Adding another electron to CsHs:
C5H5 is diamagnetic: True (C5H5 is a molecule with an even number of electrons and no unpaired electrons, thus it is diamagnetic)C5H5 is paramagnetic: False (C5H5 is a molecule with an even number of electrons and no unpaired electrons, thus it is diamagnetic)C5H5 is diamagnetic: True (C5H5 is a molecule with an even number of electrons and no unpaired electrons, thus it is diamagnetic)C5H5 is paramagnetic: False (C5H5 is a molecule with an even number of electrons and no unpaired electrons, thus it is diamagnetic)CsHs2 has more bonding electrons than CsHs: False (CsHs2 is a molecule with an even number of electrons and no unpaired electrons, thus it is diamagnetic)CsHs2 has more antibonding electrons than CsHs: False (CsHs2 is a molecule with an even number of electrons and no unpaired electrons, thus it is diamagnetic)the average C-C bond order is greater for Cs2: False (Cs2 is a molecule with an even number of electrons and no unpaired electrons, thus it is diamagnetic)the average C-C bond length is greater for CsH6: Not enough information provided to determine if this statement is true or false.To learn more about Photoelectron spectroscopy from the given link:
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How many atoms of barium are in
274.66 g of Ba?
Answer:
Avogadro's number, 6.022×1023 6.022 × 10 23 , gives us the amount of substances or particles contained in one mole. For example, there are 6.022×1023 6.022 × 10 23 atoms in one mole of Ba, the symbol for the element barium.
To find the number of atoms in 274.66 g of barium, you need to know the atomic weight of barium and convert the weight to moles. The atomic weight of barium is 137.327 g/mol. Using the formula:
mol = weight/atomic weight
we find that 274.66 g of barium is equivalent to 2.00 mol of barium. Since there are Avogadro's number of atoms per mole, the number of atoms of barium in 274.66 g is equal to 2.00 mol * 6.022 x 10^23 atoms/mol = 1.20 x 10^24 atoms.
All nervous tissue is made up of nerve cells or _______. These transmit high-speed signals called ______ which can be thought of as being similar to an electric current.
Word bank: electrical impulses, dendrites, nerve impulses, axons,neurons
Blank 1:
Blank2:
The electrical signals are action potentials, which transmit the information from one of a neuron to the other.
Define electric current?
Electric current refers to the flow of electricity in an electronic circuit, and to the amount of electricity flowing through a circuit. It is measured in amperes (A). The larger the value in amperes, the more electricity is flowing in the circuit.Electric current is basically the flow or charge of the electric charge in motion in a conductor. It is said to exist when there is a net flow of charge through the region. the current is given as the flow of charge per second: I=timecharge. The SI unit of current is Ampere.Electric current is the rate of change of electric charge through a circuit. This electric current is related to the voltage and resistance of the circuit. Using Ohm's law, we can represent as the formula: I= \frac {V}{R}To learn more about current refers to:
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in developed countries, the two most deadly sources of indoor pollution are ________.
A) radiation from electronic equipment and pesticides
B) synthetic furniture materials and radiation from electronic equipment
C) radon and cigarette smoke
D) pesticides and cleaning agents
E) pesticides and cigarette smoke
Radon and cigarette smoke are the two most deadly sources of indoor pollution in developed countries.
Through foundational gaps, radon can flow into homes, schools, and other buildings. Lung cancer can develop from inhaling it over time. Smokers who are exposed to radon have a higher risk of lung cancer than non-smokers do. find out more about radon in residences, buildings, and schools.
The second most common cause of lung cancer is radon exposure, and smokers are at much higher risk than nonsmokers. Smokers account for more than 85% of lung cancer deaths from radon exposure.
According to EPA estimates, radon is the leading cause of lung cancer among non-smokers. Radon ranks as the second most common cause of lung cancer overall.
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How do you know which ion has a larger radius?
[tex]K^+[/tex] having the greatest radius.
Atomic radii and ionic radii of cations exhibit similar patterns.
In the Periodic Table, they rise from top to bottom and from right to left.
A cation must unavoidably lose one electron in order to form. Since it is no longer in the valence shell, the electron is no longer able to protect the nuclear charge. As a result, the cationic radius ought to shrink in relation to the atomic radius.
A specific atom gets reduced and receives electrons into its valence shell when an anion arises, on the other hand. Anions should have a bigger radius than their parent atoms as a result of the valence expanding.
The Periodic Table's lower left corner is closest to the ion with the biggest radius as a result [tex]K^+[/tex].
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The complete question is
How do you know which ion has the largest radius?
[tex]Na^+ , Ga^{+3} , K^+, Mg^{+2}, Ca^{+2}[/tex]
The size of an ion, or more specifically the radius of an ion, can be determined using various methods. In general, the size of an ion is related to its electron configuration, as well as the number of protons and electrons in its nucleus and outermost electron shells.
To determine the size of an ion is to look at the ionic charge. Ions with a larger charge (e.g. +3 or +4) are generally smaller than ions with a smaller charge (e.g. +1 or +2), because the added charge causes the electrons to be pulled more closely to the nucleus. One way to determine the size of an ion is to look at its position in the periodic table. In general, ions in the same group (vertical column) of the periodic table have similar electron configurations and therefore similar sizes. Among ions in the same group, the size of the ion decreases as the atomic number increases. This is because as the number of protons in the nucleus increases, the positively charged protons are pulling the negatively charged electrons closer to the nucleus, which makes the ion smaller.
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Al+CuSO4 --> Al2(SO4)3+Cu
If 2.34 grams of Al react and the percent yield of Cu is 59.6%what mass of Cu is produced?
I don't understand how to do percent yield backward.
If 2.34 grams of Al react and the percent yield of Cu is 59.6%. The mass of Cu produced is 4.92 g
The balance reaction will be
2Al+ 3CuSO₄ --> Al₂(SO₄)₃+ 3Cu
3 moles of copper sulfate and 2 moles of aluminum react to create 3 moles of copper and 1 mol of aluminum sulfate.
First, we calculate the reactant's moles.
Al is limiting because there is an overabundance of copper sulfate.
Moles Al = 2.34 g /26.98 g/mol = 0.0867 moles
2 moles of Al can generate 3 moles of Cu in a 2:3 ratio.
The result will be
moles 3Cu= 3/2 x 0.0867 = 0.13 moles
Moles are converted to mass as 0.13 mol x 63.5g /mol = 8.26g
That is the potential yield (reaction with 100% yield).
We are aware that (yield generated / theoretical yield) x 100 = yield in percent
We exchange:
(Produced Yield / 8.26g) 100 = 59.6 %
9.71g / (Yield generated) = 0.596
Yield produced = 0.596 X 8.26g = 4.92 g
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a(n) ________ digests terminal peptide bonds to release amino acids.
An exopeptidase digests terminal peptide bonds to release amino acids. The exopeptidase cleave the terminal amino acid at the end of the peptide.
The exopeptidase cleave the terminal amino acid at the end of the peptide. The aminopeptidase is exopeptidase that will remove the amino acids at the terminal amino at the end of the peptide bond. An exopeptidase is the peptidase that cleave the terminal peptide bond.
The amino acids are the organic compounds that contains the both functional group , the amino and the carboxylic functional group. The formula for the amino acids is given as :
R
|
H₂N - C - COOH
|
H
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Identify the molecule with the strongest intermolecular force. H 2o chcl 3 c 6h 6 of 2.
Base on molecule given that is H₂O , CHCl₃, C₆C₆ and OF₂. The strongest intermolecular force is H₂O molecule.
How strong are H₂O , CHCl₃, C₆C₆ and OF₂ intermolecular force?C₆C₆ or Benzene is determine a non polar molecule where the bonded with weak london dispersion forces.CHCl₃ or Trichloro methane is determine as a polar molecule where the bonded with weak dipole dipole interactions.OF₂ or Oxygen difluoride is determine as a polar molecule but the polarities direction has opposite direction that make them cancel out each other. Their bond are weak because of london dispersion forces.H₂O or Water is determine as a polar molecule where the bond is strong in hydrogen bonding.Learn more about intermolecular force here
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. Caleb Company is a sporting goods store. The company sells a tent that sleeps six people. The store expects to sell 200 tents in 2018 and 290 tents in 2019. At the beginning of 2018, Caleb Company has 10 tents in Merchandise Inventory and desires to have 50% of the next year's sales available at the end of the year. How many tents will Caleb Company need to purchase in 2018? Begin by selecting the labels, then enter the amounts to compute the budgeted tents to be purchased. Plus: Total tents needed Less: Budgeted tents to be purchased
Caleb Company will need to purchase 190 tents in 2018 to have 50% of 2019's expected sales available at the end of the year.
This calculation is made by subtracting the 10 tents that are currently in the inventory from the total number of tents needed for 2019 (290 tents). The result (280) is then multiplied by 0.5 to get the number of tents needed for the end of the year (140). This number is then subtracted from the expected sales for 2018 (200 tents) to get the number of tents that Caleb Company will need to purchase (190 tents).
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A sample of argon gas occupies 105 ml at 0. 871 atm. If the temperature remains constant, what is the volume (in l) at 26. 3 kpa?.
To solve this problem, you can use the ideal gas law, which states:
PV = nRT
where P is the pressure of the gas, V is the volume of the gas, n is the number of moles of the gas, R is the ideal gas constant, and T is the temperature of the gas in kelvins.
Since the temperature of the gas remains constant, we can rearrange the ideal gas law to solve for the volume at the new pressure:
V = (nRT) / P
Plugging in the given values, we have:
V = (nRT) / P
= (n * 8.3145 * 273.15) / 26.3
= (n * 22.4) / 26.3
We know that the volume of the gas is 105 ml, so we can set up the following equation to solve for n, the number of moles of gas:
105 ml * 26.3 / 22.4 = n
Solving for n, we find that the number of moles of gas is 0.0141 moles. Now we can plug this value back into the ideal gas law to solve for the volume of the gas at the new pressure:
V = (0.0141 moles * 8.3145 * 273.15) / 26.3
= 22.4 / 26.3 * 0.0141 moles
= 0.0112 moles
This is equivalent to 112 ml. Since 1 litre is equal to 1000 ml, the volume of the gas in litres is 112 ml / 1000 ml/litre = 0.112 litres.\
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What environmental problem that contributes to global warming is addressed by using amine solutions to treat the fumes of a coal-burning power plant
Coal-burning power plants are one of the largest contributors to global warming, due to the high amount of carbon dioxide they emit. Amine solutions can be used to treat the fumes of these power plants, helping to reduce their carbon dioxide emissions.
Amine solutions absorb carbon dioxide from the fumes, trapping it in a water-based solution, which can then be separated from the plant’s exhaust gases. This process helps to reduce the amount of carbon dioxide that is released into the atmosphere, thus helping to mitigate the effects of global warming.
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What do you already know about DNA??
Answer:
DNA is for deoxyribouclic acid DNA is a polymer made up of monemers called nucleotides The nucleotides are made of: pentose sugar (has 5 carbons) Nitrogenous base (thymine - cytosine - adenine - guanine) Phosphate group (PO4)How many of the following molecules and ions have a bond order of 12: H2, H2+, H2−, and He22+? How many of the following molecules and ions have a bond order of : , , , and ? 0 1 2 3 4
The molecules and ions have a bond order of 1/2 is : H₂⁺ and H₂⁻. The bond order of the H₂⁺ and H₂⁻ is 0.5.
The bond orders are given below :
1) H₂ :
Bond order = (no. of the bonding electrons - no. of the anti bonding) / 2
= ( 2 - 0) / 2
= 1
2) H₂⁺ :
Bond order = (no. of the bonding electrons - no. of the anti bonding) / 2
= (1 - 0 ) /2
= 0.5
3) H₂⁻ :
Bond order = (no. of the bonding electrons - no. of the anti bonding) / 2
= ( 2 - 1) / 2
= 0.5
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What is the O-Xe-O bond angle in XeO3? O 109.5° O 90° O 120°O 180°O 60°
The O-Xe-O bond angle in XeO3 is approximately 109.5 degrees. This is due to the fact that the xenon atom is in the highest oxidation state.
In the molecule XeO3, also known as xenon trioxide, there are three oxygen atoms bonded to a single xenon atom. The O-Xe-O bond angle refers to the bond angle formed by the three oxygen atoms as they are bonded to the xenon atom. The bond angle is approximately 109.5 degrees, which is considered a "bent" or "angular" shape. This is due to the fact that the xenon atom is in the highest oxidation state of +8 and it has a high electron XeO3 density due to its large atomic size, this makes the O-Xe-O bond angle smaller than the ideal bond angle of a tetrahedral shape. The XeO3 molecule is polar due to the difference in electronegativity between Xenon and Oxygen atoms.
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Specific step by step plan for what to do during an earthquake while at home and at school
To solve this we must be knowing each and every concept related to earthquake. Therefore, step by step plan for what to do during an earthquake while at home and at school is given as below.
What is earthquake?An earthquakes (also known as just a quake, tremor, or temblor) is indeed the shaking of the Earth's surface caused by a rapid energy release in the Earth's lithosphere, which produces seismic waves.
What to do in the event of an earthquake:
During an earthquake, be as safe as possible.
Be aware that certain earthquakes are foreshocks, and that a greater earthquake may occur. Reduce your motions.
If you are indoors, drop on the ground, seek refuge behind a sturdy table or even other piece of furniture, and hold until the shaking stops.
Therefore, step by step plan for what to do during an earthquake while at home and at school is given as above.
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How many Atoms are in 3.5 grams of silicon
Draw the Lewis Dot Structure for Vinyl Iodide (C2H3I). Be certain to include any lone pairs.
The Lewis Dot Structure for Vinyl Iodide ([tex]C_2H_3I[/tex]) is as follows:
H H I
\ | /
C=C
| |
H
Each carbon atom has 4 valence electrons and each hydrogen atom has 1 valence electron. The iodine atom has 7 valence electrons. In the Lewis structure, the dots represent the valence electrons. In this case, the carbon atoms have 4 dots and the hydrogen atoms have 1 dot and the iodine atom has 3 dots.
The formal charge for each atom in the Lewis structure:
C: 0 (4 valence electrons - 4 electrons in covalent bonds = 0)
H: 0 (1 valence electron - 1 electron in covalent bond = 0)
I: -1 (7 valence electrons - 3 electrons in covalent bond -1 extra electron = -1)
The electron-pair geometry is trigonal planar.
The molecular geometry around the central carbon atom is also trigonal planar, with the three substituents (H, H and I) arranged in the same plane.
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Calculate the standard cell potential for mg(s)+fe2+(aq)→mg2+(aq)+fe(s)
The standard cell potential for the equation is 1.89V.
The potential of a cell at its standard state, which is roughly represented by concentrations of 1 M and pressures of 1 atm at 25 C, is known as the standard state potential. For the cell, write the oxidation and reduction half-reactions.
The equation given is
[tex]Mg(s)+Fe^{2}(aq)- > Mg^{+2}(aq)+Fe(s)[/tex]
Here, magnesium acts as an anode because it loses electrons during oxidation. Iron acts as a cathode when it undergoes reduction by gaining electrons.
Now, the formula to calculate the standard potential cell is
[tex]EMF=E^{o} _{cathode} -E^{o} _{anode}[/tex]
Now, here standard potential of magnesium is -2.38V
and standard potential of iron is -0.49V
which gives,
EMF=-0.49+2.38
EMF=1.89V
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how and why is the amount of light a controlled variable
Explanation:
Why:
Because if the temperature is held constant during an experiment, it is controlled. Some other examples of controlled variables could be the amount of light or constant humidity or duration of an experiment etc.
How:
The light intensity (how close the light is). Dependant variable - the number of oxygen bubbles given off (the rate of photosynthesis). Controlled variables - the size of the pondweed, the volume of water used and its temperature.
Select the correct answer from each drop-down menu. identify the type of reaction represented by each equation. a: h2 cl2 → 2hcl b: ch4 2o2 → co2 2h2o equation a represents a reaction, and equation b represents a reaction.
a. The equation a: h₂ + Cl₂ → 2hCl represents a reaction would indicate a synthesis reaction.
b. The equation b: CH₄ + 2O₂ → CO₂ + 2H₂O would reflect a combustion reaction.
Synthesis reactions include the joining of two or more atoms from distinct elements or molecules to create a final product. H₂ and Cl₂ combine to generate HCl in equation A.
Hence, the equation A is a synthesis reaction as a result.
In combustion reactions, chemicals react in the presence of oxygen to create new products, typically with the production of light and heat. In equation B, the reaction between CH₄ and O₂ results in the creation of heat together with CO₂ and H₂O.
So, the equation B is a combustion reaction as a result.
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use of molar concentrations to calculate ph what is the ph of a solution that contains 0.20 m sodium acetate and 0.60 m acetic acid (pka 5 4.76)?
The pH of the solution can be calculated using the Henderson-Hasselbalch equation: pH = pKa + log([salt]/[acid])
pH = 4.76 + log(0.20/0.60)
pH = 4.17
What is solution?In such a mixture, a solute is a substance dissolved in another substance, known as the solvent. The concentration of a solute in a solution is the mass of that solute expressed as a percentage of the mass of the whole solution. Often, the solubility in water is expressed in gram/100 mL. A solution is a homogeneous mixture of two or more substances. The particles of solute in a solution cannt be seen by the nake d eye. When the solvent is water, the word hydration, rather than solvation, is used.
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the formal charge on nitrogen in no3- is ________, where the lewis structure of the ion is:
the number of associated electrons from the number of valence electrons. For nitrogen, the formal charge is 5 - 5 = 0. For each oxygen atom, the formal charge is 6- 6 = 0.Therefore, the formal charge on nitrogen in NO3- is 0.
The formal charge on nitrogen in NO3- is 0, where the Lewis structure of the ion is:
N O
| |
O- O
| |
O O
1. Count the total number of valence electrons for the molecule. In this case, there is 1 nitrogen atom and 3 oxygen atoms, so the total number of valence electrons is 8 + 6*3 = 26.
2. Assign the electrons to the atoms according to the octet rule. Nitrogen has 5 valence electrons, so assign 5 electrons to it. Oxygen has 6 valence electrons, so assign 6 electrons to each of the oxygen atoms.
3. Count the number of electrons that are associated with each atom. Nitrogen has 5 electrons associated with it, and each oxygen atom has 6 electrons associated with it.
4. Calculate the formal charge for each atom by subtracting the number of associated electrons from the number of valence electrons. For nitrogen, the formal charge is 5 - 5 = 0. For each oxygen atom, the formal charge is 6- 6 = 0.
Therefore, the formal charge on nitrogen in NO3- is 0.
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The diagram shows layers of sedimentary rocks.
What do the rock layers show?
O Sedimentary rocks were deposited then intruded by lava that formed igneous rock.
O An igneous rock formed, and sedimentary rocks were deposited around it.
An earthquake occurred and formed a fault through sedimentary rocks.
O A stream cut through sedimentary rocks over a long period of time.
The rock layers show that an earthquake occurred and formed a fault through sedimentary rocks. That is option C.
What is a sedimentary rock?A sedimentary rock is defined as the type of rock that are formed from deposits of dead organic materials that accumulates over a long period of time.
A fault has the ability to develop through the layers of the sedimentary rock when earthquake occurs and this causes the layers of the rock to move relative to each other.
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1.0 x 10-10 moles of HCl are added to 1.0 L of pure H2O. What is the pH? A) 10.0B) 8.0C) 1.0D) 0.0E) none of these
Answer:
A. 10
Explanation:
Find its molarityM = n : v (L)
M = 1 × 10^-10 : 1
M = 10^-10
Ionize the HCl compoundHCl => H^+ + Cl^-
then, the a = 1 ( The amount of Hydrogen ions released during the ionization process)
Find the value of [H^+][H^+] = a × Ma
[H^+] = 1 × 10^-10
[H^+] = 10^-10
Find the pHpH = -log [H^+]
pH = -log 10^-10
pH = -(-10 × 1)
pH = 10
Well, the pH is 10.
Which of these alkali metal oxides has the greatest percent by oxygen mass?
A) potassium oxide
B) sodium oxide
C) cesium oxide
D) lithium oxide
The alkali metal oxides have the greatest percent by oxygen mass is lithium oxide. Therefore, option D is correct.
What is alkali metal ?The chemical elements' lithium, sodium, potassium, rubidium, caesium, and francium make up the alkali metals. Together with hydrogen, they form group 1, which is located in the periodic table's s-block.
All the Group 1 elements are extremely reactive. To keep air and water away from them, they must be stored in oil. When Group 1 elements react with water, they form alkaline metal hydroxides (with a pH above 7). This is why they are referred to as alkali metals.
Thus, option D is correct.
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Which aqueous solution has the highest boiling point?
a. 0.20 M NaCl
b. 0.10 M CaCl2
c. 0.1 M Ga2(SO4)3
d. 0.2 M C6H12O6
The aqueous solution that has the highest boiling point is 0.1 M Ga₂(SO₄)₃. the correct answer is C.
The following formula describes how a solvent's boiling point rises as a result of the presence of a solute:
ΔT = Kxmxi
Where I is the Van't Hoff factor, m is molality, which equals molarity when the solvent is water, and K is the boiling point rising constant (depending on the solute).
Therefore, the solution with the greatest boiling point will be the choice with the higher mxi:
a. NaCl has i = 2 (NaCl dissociates in Na⁺ and Cl⁻ ions).
m x i = 0.20x2 = 0.4
b. CaCl₂; i = 3. 3 ions.
mxi= 0.10M x 3 = 0.3
c. Ga₂(SO₄)₃ dissolves in 5 ions. i = 5
mx i = 0.10M x 55 = 0.5
d. C₆H₁₂O₆ has i = 1:
m x i = 0.2Mx1 = 0.2
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need a description of the rocks read the instuctions below i already have rocks sorted out
Conglomerate is a type of sedimentary rock that is made up of rounded, cobble-sized clasts that are held together by a matrix of finer-grained sediment. The clasts can be made of any type of rock, and they are typically cemented together by a matrix of sand, silt, or clay.
Ammonite is a type of extinct marine mollusk that is known for its distinctive, coiled shell. These animals lived during the Mesozoic Era, from about 400 million years ago to about 65 million years ago. They are commonly found as fossils in sedimentary rock formations, especially in shale and limestone.
Crinoids are a type of marine animal that belong to the phylum Echinodermata, which also includes sea urchins and starfish. They are characterized by their five-fold symmetry and their long, slender stems, which are attached to the seafloor by a holdfast. Crinoids are filter feeders and are typically found in shallow marine environments.
Trilobites are a type of extinct arthropod that lived during the Paleozoic Era, from about 540 million years ago to about 250 million years ago. They are known for their distinctive, segmented bodies and their multi-lensed eyes, which are thought to have been highly advanced for their time. Trilobites are commonly found as fossils in sedimentary rock formations.
What is Paleozoic Era?The Paleozoic Era is a geologic time or period that lasted from about 540 million years ago to about 252 million years ago. It is the first of three eras in the Phanerozoic Eon, the current eon in Earth's history. The Paleozoic Era is divided into six periods: the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian.
Therefore, the correct answers are as given above
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Four students described the characteristics of four different states of matter. The table below shows the description given by each student.
Description of States of Matter
Student Description
A Particles are close together, randomly arranged
B Particles are far apart, constantly collide
C Particles are close together, arranged in fixed pattern
D Particles are charged that float around
Which student described liquids?
Answer:
A Particles are close together, randomly arranged
Explanation:
Liquids molecules are close to each other but randomly arranged whereas solid is in fixed pattern.
The CHCl3 molecule belongs to the point group C3v. List the symmetry elements of the group and locate them in the molecule.
Ammonia belongs to the symmetry group desig- nated C3v, characterized by a three-fold axis with three vertical planes of symmetry.
What is the order of point group C3v?The primary axis (C3) has an order of 3, while the C3v point group has an order of 6. There are three irreducible representations of the group. The C3v point group and D3 are isomorphic.
Additionally, it is symmetric to the Symmetric Group Sym(3), which is the collection of all orders 3-permutations. The molecule will remain the same if rotated by 3360=120 degrees around its C3 axis of symmetry.
The molecule will remain the same if rotated by 3360=120 degrees around its C3 axis of symmetry. The same molecule results by rotating the supplied molecule by 120 degrees around the axis that runs through the centre of the ring and perpendicular to its plane.
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will precipitation occur when the following solutions are mixed? if so, write a balanced chemical equation for the reaction. (a) na2co3 and agno3, (b) nano3 and niso4, (c) feso4 and pb1no322.
If following solutions are mixed then only Na₂CO₃ and AgNO₃ will form precipitation.
Balance chemical equation for this is as shown below:
Na₂CO₃(aq) + 2 AgNO₃(aq) ⇒ Ag₂CO₃(s) + 2NaNO₃(aq)
NaNO₃ and NiSO₄ doesn't form precipitation.
PPT is any liquid or frozen water that forms in the atmosphere and falls back to the Earth. It comes in multitudinous forms, like rain, sleet, and snow. Along with evaporation and condensation, ppt is one of the three major corridors of the global water cycle.
A balanced chemical equation is an equation where the number of particles of each type in the response is the same on both reactants and product sides. The mass, as well as the change, are equal in a balanced chemical equation.
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A 4.55-g sample of helium gas at 22°C takes up a volume of 7.08 L. Determine the pressure of helium in units of atm.
The pressure of the helium gas in units of atm would be 3.93 atm
Ideal gas problemThe ideal gas law is represented by the following equation:
PV = nRT
Where:
P is the pressure of the gasV is the volume of the gasn is the number of mole of the gasR is the ideal gas constantT is the temperatureIn this case, n = mass/molar mass = 4.55/4 = 1.1375 mol
V = 7.08 L
R = 0.083
T = 22+273 = 295 K
P = nRT/V
= 1.1375x0.083x295/7.08
= 3.93 atm
Thus, the pressure of the helium gas would be 3.93 atm.
More on the ideal gas law can be found here:https://brainly.com/question/28257995
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