A chemist determined the boiling point of c8h18 to be 124.1c the actual boiling point is 125.7 what is the percent error

a. 1.27
b. -1.6
c. -1.29
d. -0.013

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 following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.

The arrangement of particles is most ordered in a sample of