A) The decay rate does not change.
Changes in temperature and surface area do not affect the rate of nuclear decay for a specific radioisotope. The decay rate is a constant for each individual radioisotope.
A sample of the radioisotope potassium-40 is crushed to increase its surface area. The temperature of the sample is then lowered 25°C.
What affect do these changes have on the rate of nuclear decay?
A) The decay rate does not change.
B) The decay rate doubles.
C) The decay rate increases by half.
D) The decay rate decreases by half.
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