Answer: Temperature before the increase in
was a few degrees lower than temperature after the increase.
Explanation:
According to Charle's Law which states that The volume of gas is directly proportional to the temperature of the gas, when pressure is kept constant.

(At constant Pressure)
With the increase in level
in atmosphere the increase in temperature of the atmosphere will be observed.
Hence, temperature before the increase in
was a few degrees lower than temperature after the increase.
Answer & Explanation:
The law of multiple proportion states that two elements A and B can react with each other to form multiple compounds while one of the two elements remain fixed.
For Example
Hydrogen reacts with oxygen to form:
Water (H2O)
Hydrogen peroxide (H2O2)
Answer:

Explanation:
Hello,
In this case, the molarity is defined as the ratio of the moles of the solute to the volume of the solution in liters:

In this case, the solute is the KCl (potassium chloride) and the solution is made up of both water and KCl. Moreover, since during this type of dissolution processes, the volume of the solution is not significantly affected by the addition of the solute, the resulting molarity is:

Best regards.