Why are some isotopes used as tracers? a. they leave visible trails. b. they bind with all molecules. c. they decay at a predictable rate. d. they are uniquely identifiable like fingerprints.

To save time, you can approximate the initial mass of the solid to the nearest ±1 g. for example, if you are asked to add 14.3 g of copper, add between 13 g and 15 g. which of the following sets include two samples with an equal density? which all that apply below 15.4 g gold and 18.7 g silver 15.2 g copper and 50.0 g copper 20.2 g silver and 20.2 g copper 11.2 g gold and 14.9 g gold

What are the similarities of physical and chemical change ?

Which states of matter have particles that move independently of one another with very little attraction?