Of the solids listed, which type has the highest melting point?

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?