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.

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

What is the effect of returning nuclear reactor cooling water back into bodies of water?

Asample of sea water contains 6.28g of sodium chloride per litre of solution. how many milligrams of sodium chloride would be contained in 15.0ml of this solution?