At a temperature of 500℃ and a pressure of 0.932 bar, sulphur vapour has a density of 3.71 g/dm3. What molecular formula for sulphur is compatible with this set of conditions?
The density of a certain gaseous fluoride of phosphorus is 3.88 g/L at standard temperature and pressure (, 1.00 bar).
What is the molar mass of this fluoride?
What is the molecular formula of this fluoride?
What is the molar mass of an ideal gas if 0.281 g of the gas occupies a volume of 125 mL at a temperature 126℃ and a pressure of 777 torr?