A sample of gas occupies 810 mL at 24 °C and 992 mmHg. Which is the volume of the gas at 0 degrees Celsius and 1 atm? *
-1,150 ml
-972 mL
-Undefined since we can not divide, by 0 for temperature
-675 mL

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