Melting point for strontium ( Sr )

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.