marquetter1670 marquetter1670

08-05-2024
Chemistry

contestada

A sample of a radioactive ore is found to contain 11.9 g and 30.9 g of the ore initially. If the half-life of the ore is x years, then the value of x is:
a) 20 years
b) 30 years
c) 40 years
d) 50 years

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