Question

A substance has a half-life of 3 years. If 2000 grams are present initially, how much will remain after 1.5 years?

Answer 1

HI friend

Shortcut

• First calculate no of half lives here 1.5/3=0.5 half lives.
• Now formula is initial /2^n which gives
• $2000 \div \sqrt{2 = }$
• which given 1414.5 g

hope it helps