Relative atomic mass from isotopic abundance
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Relative atomic mass from isotopic abundance |
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Calculate the relative atomic mass, Ar, of the following. Give your answer to 4 significant figures:
| 1 | Boron contains: | 19.77% 10B | 80.23% 11B | |||
| 2 | Silicon contains: | 92.18% 28Si | 4.70% 29Si | 3.12% 30Si | ||
| 3 | Chromium contains: | 4.31% 50Cr | 83.76% 52Cr | 9.55% 53Cr | 2.38% 54 Cr | |