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mestny [16]
3 years ago
5

What is the half-life of Technetium-99 if a 200 gram sample decays to 50 grams in 639,000 years?

Chemistry
1 answer:
Elenna [48]3 years ago
5 0

Answer:

The half-life of Th-232 is 1.4 ∙ 10¹⁰ years.

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Answer:

Mass =  42.8g

Explanation:

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Step 1: Determine the balanced chemical equation for the chemical reaction.

The balanced chemical equation is already given.

Step 2: Convert all given information into moles (through the use of molar mass as a conversion factor).

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x = 2.37972 moles

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