Question

If the half-life of a substance is 2 days, what is the amount of the substance left at the end of 4 days?

Answer 1

25%.

Explanation:

When calculating the half-life of a substance, you divide it by two, or multiply it by 1/2, every time a half-life, or in this specific question, 2 years passes. This is the correct answer to this question.

Hope this helps!!!

Kyle.