A gaseous compound of phosphorus (P) and fluorine (F) was found to have a density of 3.50 g L' at a temperature of 25.0 °C and a prcssure of 740 torr. It was also found to consist of 35.2% P and 64.8% F in a volume of 1 L. Assume that the mass of the sample is 100.0 g. Determine a) (i) its empirical formula (ii) its molecular mass using its empirical formula stated in part (i) (iii) its molecular mass using ideal gas law (iv) its molecular formula. Explain why the molecular formula is same as empirical formula. Given that the molecular mass of P is 30.97 g mol·'; the molecular mass of F is 19 g mol'; 1 atm = 760 torr

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Q: A chemist vaporizes a liquid compound and determines its density to be 1.585 g/Lat 90.0 °C and 753…

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Q: What is the density of sulfur dioxide gas at 795 torr and 25 oC?

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Q: What minimum pressure in psi would a 250-ml aeroso can have to withstand if it were to contain 2.50…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.