The half life for the radioactive decay of potassium-40 to argon-40 is 1.26 x 10 years. Suppose nudear chemical analysis shows that there is 0.556 mmol of argon-40 for every 1.000 mmol of potassium-40 in a certain sample of rock. Calculate the age of the rock. Round your answer to 2 significant digits.

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Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.