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The half-life of sodium-24 is 15 minutes. What was the original mass of Na-24 if 5.0 g remains after 1 hour? 20 g 40g 80g 100g

The half-life of sodium-24 is 15 minutes. What was the original mass of Na-24 if 5.0 g remains after 1 hour? 20 g 40g 80g 100g
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2 votes
The half-life of sodium-24 is 15 minutes. What was the original mass of Na-24 if 5.0 g remains after 1 hour?

20 g
40g
80g
100g

User SandeepM
by
7.1k points

2 Answers

4 votes
The half life of sodium 24 is 15 minutes. What’s the original mass of Na 24 if 5.0g remains after 1 hour
answer
40g
User Terik
by
8.3k points
2 votes

40g remains after an hour.

User Nurit
by
7.8k points
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