Compare the strength of attractions
between polas molecules and nonpolar
molecules.

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

State one important difference between a physical change and a chemical change?

What the blanks in these lines are ?