Which of the following statements is true?
A Both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction.
B Neither chemical reaction rates nor nuclear decay rates vary with the conditions of the reaction.
C Nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not.
D Chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not.

Question

13-02-2018
Chemistry

contestada

Which of the following statements is true?
A Both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction.
B Neither chemical reaction rates nor nuclear decay rates vary with the conditions of the reaction.
C Nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not.
D Chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not.

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Edufirst Edufirst · Answer 1 · 2018-02-14T02:49:52+01:00

Answer: option D Chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not.

Justification:

1) The rate of chemical reactions are affected by: concentration of the reactants, state of the reactants, temperature, and presence of catalizers. So the first part of the statement is true.

2) Nuclear decay rates are constant. The decay depends on the nature of the element but not the conditions. That is why dating fossils with radiactive isotopes is possible. So, the second part of the statement is true.