Consider the gaseous reaction: N2H4(g) + 3 O2(g) → 2 NO2(g) + 2 H2O(g)

If the above reaction has a percent yield of 98.5%, what mass in grams of oxygen is needed to produce 49.0 g of NO2(g), assuming an excess of N2H4?
Question 6 options:

a. 25.9 g

b. 23.1 g

c. 51.9 g

d. 11.5 g

e. 50.4 g

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.