chem hw help please? thanks :)?
use the following equation:
C7H8 + HN03 ----> C7H5N3O6 + H20
how many grams of TNT can be made when 829 g of C7H8 reacts with excess nitric acid?
- Anonymous1 decade agoBest Answer
"excess" nitric acid means that the C7H8 is the limiting reagent.
since you know the mass of C7H8, and can figure out the molar mass of it... you can calculate the number of moles
mass C7H8= 829g
molar mass C7H8= 92.15
moles C7H8= mass/molarmass
= 9 moles C7H8
since this is the limiting reagent.... this means that there is also 9 moles of C7H5N3O6 produced
rearranging the moles equation... you get:
mass= moles x molar mass
molar mass of TNT = 227.12 g/mol
moles of TNT = 9 moles
mass = (9)(227.12)
=2044 g = 2.04 kg