Reactant → product

if there are 2 grams of product produced by the chemical reaction, how many grams of reactant were consumed?

a) 0 grams
b) 1 gram
c) 2 grams
eliminate
d) 4 grams

If we have two gram produce 2 grams were consumed

Due to the mass conversation law which state that the mass in a isolated is neither created nor destroyed by chemical reaction or physical transformation. Therefore the mass of the product must be equal to the mass reactant

a force of 500                  

∠gdh and ∠edh on edg.

answer is c