How much heat will be absorbed when 38.2 g of bromine reacts with 12.4g of hydrogen according to the following equation? H2 + Br2 + 72.80 = 2HBr

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?

Select all that apply. a beta particle: is electromagnetic energy is an electron has zero charge is emitted from the nucleus has a +2 charge has a -1 charge

How do dying stars contribute to the formation of planets