What is the pressure (in kPa) in a 2.00 L flask at 27 oC that contains 0.200 moles of gas?

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?

Name the intersection of plane bpq and plane cpq.

What is a difference between a mixture of elements and a mixture of compounds