Which of the following is true about gas particles?

They repel each other with a strong force.

There is a lot of empty space between them.

They collide to increase their net kinetic energy.

Explanation:

the formula would be mgso4

mgso[subscript]4

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.