PLS ANSWER FAST :( BRAINLIEST only if correct AND 25 POINTS tysm

1. Yes it is balanced.

2. Water in its state change. It changes the T° from 90° to 100°C. The kinetic energy of the molecules will be higher when the temperature increases.

Explanation:

1. Mg + 2HCl → MgCl₂ + H₂

The equation is balanced, just see the subscript and the stoichiometry of the reaction

You have 1 Mg in both sides, 2 Cl in both sides and 2 H in both sides.

2. Let's use water as an example.

When water changes its temperature, from 90°C to 100°C, we say that is changing from liquid state to gas.

When you give "heat" to something you are modifying its temperature. In this case, this heat increase the temperature of water. Heat is a sort of energy. For this case, the kinetic energy of molecules is higher.

If you see water on a vessel about to boil, you will see particles rising from the bottom to the surface to pass into the gaseous state. If there is an increase in the kinetic energy in the molecules, it means that they will move more freely and much more quickly, so it will be easier for them to "escape" from the liquid phase to the gas phase.

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons

sorry i was late, but i don't know what assignment your talking about, i'm in flvs as well, im in earth space science. but u are behind pace bc every class should be in the 3's or 4'