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Question
A certain substance makes up 2.2 x10-4 percent by mass of a normal healthy human being. How many grams of that substance would be found in the body of a person weighing 160lb? (1.0 kg = 2.2 lb)
A) 1.6 g
B) 0.16 g
C) 350 g
D) 160 g
E) 0.8 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