Answer to Question #293790 in Physical Chemistry for Roman

Question

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

In the above equation, how many grams of water can be made when 3.5 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.:

Answer 1

3.5 moles of HNO₃ yield

$\frac{3.5}{8}×4=1.75$ moles of water

Molar mass of water$=18$

Mass $=1.75×18$

$=31.5g$