A 23.6 g sample of an unknown gas occupies a volume of 12.0 L at standard temperature and pressure. What is the molecular mass (molar mass) of this gas?

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

How have the greenhouse gasses increased from the year 2000 to 2018

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms