3 years ago

Thallium consists of 29.5%TI-203 and 70.5%TI-205. What is the relative atomic mass of thallium? 203am

1 answer:

5 0

Explanation:

This is basically a ratio math problem. We have two different masses and a known percentage of each. Combining them into a weighted-average mass is done by multiplying each mass by the weight percent and adding them up.

0.295 x 203 + 0.705 x 205 = 59.885 + 144.525 = <span>204.4</span>

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