Table of Contents
How do you find the molecular formula of an unknown gas?
Calculate the number of moles of gas from the given pressure, volume, and temperature.
- Calculate the number of moles of gas from the given pressure, volume, and temperature. n = PV/RT.
- The molecular weight of the gas is grams of gas (1.56 g) divided by moles of gas: 1.56 g ÷ 0.0371245 mol = 42.020768 g/mol.
How do you find the molar mass of a gas?
The molar mass of a gas can be derived from the ideal gas law, PV=nRT , by using the definition of molar mass to replace n , the number of moles.
What is the molar mass of hgcl2?
271.52 g/mol
Mercury(II) chloride/Molar mass
How do you find the molar mass of a compound?
The easiest way to find the molar mass is by adding the atomic masses of each atom in a compound. Therefore, the molecular formula is the key to find out the molar mass. The way of finding the molecular formula of a compound is explained in this article.
How do you find the molecular formula from the empirical mass?
Sum the masses to determine the molar mass represented by the formula. The next step is to weigh a sample, then divide the empirical mass into the actual mass of the compound. This division produces a whole number. Multiply the subscripts in the empirical formula by this number to determine the molecular formula.
What is the relative molecular mass of the compound C5H10?
Relative molecular mass = 70. Empirical formula mass = 12 + 2 = 14. The relative molecular mass is 5 x the relative empirical formula mass. The molecular formula is 5 x the empirical formula. The molecular formula is C5H10.
How do you find the molecular formula of a compound?
The molecular formula of a compound can be found with the use of empirical formula. The empirical formula is the chemical formula which gives the ratio between the atoms present in the compound. It does not give the exact number of each atom present.