Calculate the mass of chromium produced from 50g of Cr2O3.

34 gram of chromium produced from 50g of

Explanation:

To calculate the moles :

The decomposition of follows the equation :

According to stoichiometry :

2 moles of produce = 4 moles of

Thus 0.33 moles of will produce=  of

Mass of

Thus 34 gram of chromium produced from 50g of

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.