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Question
The half-life of phosphorus-33 is 25 days. How much of a 128-g sample will remain after 150 days?A) 2.0 g
B) 16 g
C) 1.0 g
D) 8.0 g
E) 4.0 g
Answer
This answer is hidden. It contains 1 characters.
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Q:
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Q:
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Q:
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Q:
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Q:
For a certain first-order reaction with the general form aA → products, the rate is 0.32 M·s-1 when the concentration of the reactant is 0.29M. What is the rate constant for this reaction?A) 0.26 s-1B) 1.1 s-1C) 0.32 s-1D) 3.1 s-1E) 3.8 s-1