In converting between units, it is never necessary to use more than one conversion factor. a. true b. false

In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?

Which of the four hypothetical substances you investigated would be most harmful to living organisms? 50 points!

Determine type of reaction & predict the product c3h12+o2 =