How many molecules are in a mole of O↓2 molecules?
Please calculate the following values:
a. How many grams are 2.13 mol C, H?
b. How many molecules are 2.13 mol C, H,?
List all the possible mole ratios from the following balanced chemical equation:
4 Fe +30, - 2 Fe, o,

i think is conclusions.i think so

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