Co mwhen co2( g) is put in a sealed container at 701 k and a pressure of 10.0 atm and is heated to 1401 k, the pressure rises to 22.5 atm. some of the co2 decomposes to co and o2. calculate the mole percent of co2 that decomposes.

25.06%

Explanation:

For the ideal gas law, we can calculate the number of moles of the gas:

PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant (0.082 atm*L/mol*K), and T is the temperature.

The volume must be constant because it's a sealed container. So, in the beginning:

10*V = n*0.082*701

57.482n = 10V

n = 0.1740V

After de decomposition:

22.5*V = n'*0.082*1401

114.882n' = 22.5V

n' = 0.1958V (which is the total amount of moles of the gases)

Let's supose, V = 1L, so:

n = 0.1740 mol, and n' = 0.1958

For the decomposition reaction, we can do a reaction table:

2CO₂(g) → 2CO(g) + O₂(g)

0.1740          0            0            Initial

-2x              +2x          +x          Reacts( stoichiometry is 2:2:1)

0.1740-2x    2x            x           Final

n' = 0.1740 - 2x + 2x +x

0.1740 + x = 0.1958

x = 0.0218 mol

So, 0.0436 (2*0.0218) mol of CO₂ decomposes, the percent is:

(0.0436/0.1740)*100% = 25.06%

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms