Dorothy Perkins, Huddersfield Opening Hours. Below are the normal opening hours for Dorothy Perkins, Huddersfield. For seasonal (e.g. Christmas & Easter) and bank holiday opening hours please visit Dorothy Perkins's website.or seasonal (e.g. Christmas & Easter) and bank holiday opening hours please visit Dorothy Perkins's website.
Hydrogen sulfide, H2S has a molar mass of  34.08088g/mol.
Thus, it is expected that the mass of the molecule would be the sum of the masses of sodium, oxygen and hydrogen. This is the molar mass of sodium hydroxide. The unit of this mass is gram per mole. However, when this mass is shown in grams instead of atomic mass unit, it is known as a mole. The atomic masses of sodium, oxygen and hydrogen are 23, 16 and 1 respectively. The molar mass is, therefore, 23 plus 16 plus 1, which is 40.