Question

Calculate the atomic mass (average) of chlorine using the following data: | Isotope | % Natural Abundance | Molar Mass | |---------|--------------------|-----------| | 35Cl | 75.77 | 34.9689 | | 37Cl | 24.23 | 36.9659 |

What will be the mass of one 12C atom in g?

Use the data given in the following table to calculate the molar mass of naturally occuring argon isotopes: | Isotope | Isotopic molar mass | Abundance | |---------|--------------------|-----------| | 36Ar | 35.96755 g mol–1 | 0.337% | | 38Ar | 37.96272 g mol–1 | 0.063% | | 40Ar | 39.9624 g mol–1 | 99.600% |