What is the mass, in grams, of 28.74 ml of acetone?

22.73 g

Explanation:

To answer this question we need to look up the density of acetone in literature: 0.791 g/mL at 25 °C.

Using the density, we can calculate the mass of acetone in any given volume:

So at 25 °C, 28.74 mL of acetone would weigh 22.73 g.

the answer is d. 74.02

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.