PLEASE HELP ME I AM DESPERATE PLEASE!!!!!!!

Question

3 Cu  +   8HNO3  --> 3 Cu(NO3)2   +  2 NO  +  4  H2O

In the above equation how many moles of water can be made when 102.3 grams 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

Answer 1

Good afternoon. We can solve this problem in two steps.

Step 1: convert grams of HNO₃ to moles of HNO₃

Step 2: convert moles of HNO₃ to moles of water by using the coefficients in the balanced equation

(102.3g HNO₃) X (1 mol HNO₃ / 63g) X (4 mol H₂O / 8 mol HNO₃) = 0.81 mol H₂O