A sample of pure carbon dioxide gas has a mass of 110 g. How many moles of CO2 are in the sample?

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

i think its 100.

hope this !

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