Question

A student dissolves 4 grams of salt into 10 grams of water. The total weight of the solution is 14 grams. The student then heats the solution until all of the liquid turns into a gas and only the salt is left. The student is able to collect the evaporated gas. The student weighs the salt left over from the solution and the evaporated gas.

How much should the student expect the salt and vapor to weigh?

Answer 1

14 grams

Step-by-step explanation:

4 grams of salt and 10 grams of water

According to the law of conservation of mass, mass can neither be created, nor be destroyed in a chemical reaction so the weight of the products will be the same as the weight of the reactants.