1. What type of changes are reversible?

Asample contains 16.75 g of the radioisotope u-236 and 50.25 g of its daughter isotope, th-232. how long did it take for decay to take place if one half-life of u-236 is 23 million years? 46 million years 69 million years 92 million years 115 million years

How to convert a density of 0.791g/cm3 to lb/ft3

Why did southern business leaders want to increase the number of slaves