For the following substances, write the chemical formula, and then find the molecular mass. 1.barium 2. ammonium sulfate
3. zinc cyanide

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

Quiz1. which physical state of nitrogen has the highest entropy? a solid© b gasoc liquid

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.