The scientist who discovered the relationship between the relative volume of a gas and the stoichiometric coefficients in a chemical equation was .

The scientist who discovered the relationship between the relative volume of a gas and the stoichiometric coefficients in a chemical equation was Gay-Lussac

Explanation:

Gay -Lussac was a french chemist he proposed 2 fundamental laws of gases in 19th century.

He studied the  relationship between the pressure of a gas and its absolute temperature.

Gay-Lussac's Law states that the pressure of a given mass of gas varies directly with the absolute temperature of the gas, when the volume is kept constant.

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )