The mass of `0.5 dm^(3)` of hydrogen at a pressure of 1 bar of Hg and at a temperature of `300 K` was found to be `4.0 xx 10^(-2) g`. Calculate the molar mass of hydrogen.

The mass of 500 mL of hydrogen gas at a pressure of 1 bar and at temperature of 300 K was found to be 4.09xx10^(-2)g . Calculate the molar mass of hydrogen.

Calculate the number of moles of hydrogen gas present in 500 cm^(3) of the gas taken at 300K and 760 mm pressure. If this sample of hydrogen is found to have a mass equal to 4.09xx10^(-2) g, calculate the molar mass of hydrogen.

300cm^(3) of an aqueous solution of a protein contains 2.12 g of the protein, the protein, osmotic pressure of such a solution at 300 K is found to be 3.89xx10^(-3)" bar." Calculate the molar mass of the protein. ("R = 0.0823 L bar mol"^(-1)K^(-1))

200 cm^(3) of an aqueous solution of a protein contains 1.26 g of protein. The osmotic pressure of such a solution at 300 K is found to be 2.57 xx 10^(-3) bar. Calculate the molar mass of the protein. (R = 0.083 L bar "mol"^(-1)K^(-1) )

200 cm^(3) of an aqueous solution of a protein contains 1.26 g of the protein. The osmotic pressure of such a solution at 300 K is found to be 2.57 xx10^(-3) bar. Calculate the molar mass of the protein.

200 cm^(3) of an aqueous solution of a protein contains 1.26 g of the protein. The osmotic pressure of such a solution at 300 K is found to be 2.57 xx10^(-3) bar. Calculate the molar mass of the protein.

200" cm"^(2) of an aqueous solution of a protein contains 1.26 g of the protein. The oxmotic pressure of such a solution at 300 K is found to be 2.57xx10^(-3) bar. Calculate the molar mass of the protein.

200cm^(3) of aqueous solution of pretein contains 1.26 g of the protein. The osmotic pressure of such a soolution at 300 K is found to be 2.57xx10^(-3) bar. Calculater the molar mass of the protein.