Answer:
19.6 g of N2
Explanation:
2 NH3 + 3 CuO g 3 Cu + N2 + 3 H2O
In the above equation how many grams of N2 can be made when 167 grams 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.:
Hydrogen
1
Nitrogen
14
Copper
63.5
Oxygen
16
first, we should rewrite the equation without using "g " for the yields sign
2 NH3 + 3 CuO ---------> 3 Cu + N2 + 3 H2O
next we need the molar mass of the compounds
CuO =63.5 + 16 = 79.5
N2 = 2 x 14 = 28
next , we see that 3 moles of CuO produce 1 mole of N2
167 g of CuO is 167/79.5 = 2,1 moles of CuO
since 3 moles produce 1 mole of N2
2,1 moles produce 2.1/3 = 0.7 moles of N2
1 mole of N2 is 28 gm
0.7 moles is 28x0.7 = 19.6 g of N2
