What is the mass, in g, of 6.82x10^23 molecules of aluminum chloride?

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

What is the independent variable in this investigation? mass volume sample number substance density

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?