I know that it is easy to bypass a question but please think about how I actually need real help desperately with my chemistry homework as soon as possible please

Question

1.) 2 NH3 + 3 CuO → 3 Cu + N2 + 3 H2O

In the above equation, how many grams of N2 can be made when 7.7 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.) 3 Cu + 8HNO3 → 3 Cu(NO3)2  + 2 NO + 4 H2O

In the above equation, how many grams of water can be made when 10.2 moles of HNO3 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

please help by explaining and solving please.

Answer 1

(1)

From the equation, 3 moles of Cu0 gives 1 mole of N₂

So 1 mole gives 1/3 moles of N₂

So 7.7 moles gives 7.7/3 moles of N₂

Molecular mass of N₂ = 2 X 14 = 28g

Mass of N₂ formed = 28 x (7.7 /3) g

Use same idea for (2)