Which topic is commonly used to explain activation energy and how chemical reactions happen? reaction rate
collision theory
velocity distribution
spontaneous reaction

What happens to isotopes that are unstable?

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years