3 years ago

A chemist begins studying a radioactive sample that has a mass of 450 grams.

1 answer:

5 0

Answer:

The question should say..... How much of the sample is left in......FIVE.....weeks? At least that is what I think you want to know.

The answer is 318.13 grams.

Step-by-step explanation:

450 - 6.7% = 419.85 grams ---- End of week 1

419.85 - 6.7% = 391.72 grams ---- End of week 2

391.72 - 6.7% = 365.47 grams ---- End of week 3

365.47 - 6.7% = 340.98 grams ---- End of week 4

340.98 - 6.7% = 318.13 grams ------ End of week 5

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