2 NH3 + 3 CuO g 3 Cu + N2 + 3 H2O In the above equation how many grams of N2 can be made when 132 grams of CuO are consumed?

Question

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

Answer 1

Hi Ansleigh,

To start, find the mass of one mole of CuO and N2:

CuO = 63.5+16 = 79.5g/mol

N2 = 14x2 = 28g/mol

We need to find out how many moles of CuO 132 grams is:

132g÷79.5g/mol = 1.66 mol

We know from the balanced equation that for every 3 moles of CuO consumed, 1 mol of N2 is formed. Using this, we can calculate:

3cmol CuO/1 mol N2 = 1.66 mol CuO/x mol N2

x = 0.553 = 0.6 mol N2 are formed when rounded to nearest tenth.

Please give a thumbs up to this answer if it helped you.