Which of these would support the idea that mass is conserved in a reaction that produces a gas as a product? Group of answer choices

Subtracting the mass of the gas from the mass of the solid and liquid products.

Mixing the reactants and measuring their total mass.

Trapping the gas and measuring its mass.

Heating the reactants to ensure the reaction occurs in a gaseous state.

screening

explanation:

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally

answermeridional ;