Question

You are performing an experiment in the lab and have Reactant A and Reactant B. The total mass of

both reactants before the experiment is 15.0 grams. You place the reactants in an open beaker to react
without a lid. The beaker is cold to the touch afterward. You measure the product in the container and
only get a mass of 12.4 grams. What happened to the rest of the mass?
Check all statements that are true.
Some of the reactants were spilled.
One of the products was possibly a gas.
Some of the products changed to pure energy.
ergy.
Some of the products were released to the surrounding environment.
The reactants naturally produced less product because of the elements used.
Some of the atoms became smaller.
The reaction absorbed energy.
The reaction released energy.

Answer 1

The corect answer is some of the reactants were spilled.

Step-by-step explanation:

Before the initiation of the reaction the total mass of both reactants is 15.0 grams and after the reaction the net mass of product is grams 12.4grams.

This happens because during the reaction some reactant molecules were spilled which ultimately leads to decrease the mass of the reactant molecule.

The decrease in the amount of the reactant equals with amount of product formed.