A gaseous product has a mass of 2.34 g and occupies a volume of 0.854 L. The temperature in the laboratory is 302 K and the air pressure is 1.04 atm. Calculate the molar mass of the gas. 22.4 g/mol
44.0 g/mol
65.3 g/mol
86.9 g/mol

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