A gas has a density of 1.43 g/L at a temperature of 296 K and a pressure of 0.789 atm. What is the molar mass (molecular weight) of the 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?

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

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?