During one researcher's experiment, the total mass of the gas-generating solid and entire assembly was 52.1487g before the reaction and 52.1098g after the reaction. if the number of moles of gas generated was calculated to be 8.854 x 10-4 mol, what is the molar mass of the gas?

43.93 g/mol

Explanation:

The mass of the gas before reaction = 52.1487 g

The mass of the gas after reaction = 52.1098 g

Mass of gas generated = 0.0389 g

Moles of the gas =

The formula for the calculation of moles is shown below:

Thus,

Molar mass of the gas = 43.93 g/mol

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

thats how its supposed to be