4. The half-life of strontium-90 is 28 years. If 140 years pass, how much if left of a
500 g
sample?

An experimental procedure requires a 10 ml of acid to be dissolved

Right anwser gets marked brainliest newton's discovery concerning how fast an object will change speed is the: 1st law 2nd law 3rd law universal gravitation

What would happen to a volleyball left outside in the winter? o o o o a. it would expand. b. it would lose air. c. it would shrink. d. it would explode.