Hi please someone respond and help me with my chemistry please homework as soon as possible w

Question

1.) 2 NH3 + 3 CuO → 3 Cu + N2 + 3 H2O

In the above equation, how many grams of N2 can be made when 11.8 moles of CuO are consumed?

Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0

Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.:

Element	Molar Mass
Hydrogen	1
Nitrogen	14
Copper	63.5
Oxygen	16

2.) For the reaction C + 2H2 → CH4, how many grams of hydrogen are required to produce 14.9 moles of methane, CH4 ?

Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0

Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.:

Element	Molar Mass
Hydrogen	1
Carbon	12

please please help explain and solve

Answer 1

Hi,

1. Our equation reads: 2 NH3 + 3 CuO → 3 Cu + N2 + 3 H2O
2. The numbers in the equation show how many moles are converted, so 3 moles of CuO would produce 1 mole of N2.
3. Continuing this relationship shows that 11.8 moles of CuO yields 3.93 moles of N2.
4. N2 indicates that there are two Nitrogen atoms, so our total molar mass for N2 is (14*2) or 28 grams.
5. We multiple the number of grams in a mole of N2 by the number of moles for our final answer.
6. 28*3.93 = 110.1 grams
7. Our equation reads: C + 2H2 -> CH4 and we need to know how many grams of hydrogen produce 14.9 moles of CH4.
8. First, find the molar mass of Hydrogen, which is 1 gram. For H2 this would be 2 grams.
9. Apply this to the equation, so 2H2 indicates that 2 moles of H2 are used when 1 mole of CH4 is produced.
10. 14.9 moles of methane then requires 14.9 * 2 moles of H2, or 29.8 moles of H2 total.
11. Each mole of H2 has a mass of 2 grams, 29.8 * 2 grams = 59.6 grams of Hydrogen.