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A Glass Container Holds Equal Numbers of Atoms of Phosphorus

Question 19

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A glass container holds equal numbers of atoms of phosphorus 30 with a half-life of 2.5 minutes and of nitrogen 13 with a half-life of 10 minutes.After 20 minutes the ratio of the number of nitrogen atoms remaining to the number of phosphorus atoms remaining is


A) A glass container holds equal numbers of atoms of phosphorus 30 with a half-life of 2.5 minutes and of nitrogen 13 with a half-life of 10 minutes.After 20 minutes the ratio of the number of nitrogen atoms remaining to the number of phosphorus atoms remaining is A) . B) . C) . D) 64. E) 256. .
B) A glass container holds equal numbers of atoms of phosphorus 30 with a half-life of 2.5 minutes and of nitrogen 13 with a half-life of 10 minutes.After 20 minutes the ratio of the number of nitrogen atoms remaining to the number of phosphorus atoms remaining is A) . B) . C) . D) 64. E) 256. .
C) A glass container holds equal numbers of atoms of phosphorus 30 with a half-life of 2.5 minutes and of nitrogen 13 with a half-life of 10 minutes.After 20 minutes the ratio of the number of nitrogen atoms remaining to the number of phosphorus atoms remaining is A) . B) . C) . D) 64. E) 256. .
D) 64.
E) 256.

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