Calculate the number of moles of h2o2 required to produce 0.08 moles of hno3 by the following reaction. 7 h2o2 + n2h4 2 hno3 + 8 h2o
im having trouble with stoichiometry

First step is always balance the equation:
n2h4 + 7 h2o2 --> 2hno3 + 8h2o 

so assuming that n2h4 is in excess and only moles of h2o2 are determining the product content then 7 moles of h2o2 give 2 moles of hno3
so:
7: 2
x: 0.08
x=0.28 moles of h2o2

The number of medals awarded to the track team during the season.

The correct answer is:   bri hope this answer was ! : )