Question

Define a). formula mass b). molar valume​

Answer 1

Answer:

Formula mass = The formula mass of a substance is the sum of the average atomic masses of each atom represented in the chemical formula and is expressed in atomic mass units. The formula mass of a covalent compound is also called the molecular mass. ... The mass in grams of 1 mole of substance is its molar mass.

Molar mass = The molar volume of a gas is the volume of one mole of a gas at STP. At STP, one mole (6.02×1023 representative particles) of any gas occupies a volume of 22.4L (figure below). Figure 10.13. 2: A mole of any gas occupies 22.4L at standard temperature and pressure (0oC and 1atm).

Answer 2

Answer:

molar volume

the molar volume, symbol Vm,[1] or {\displaystyle {\tilde {V}}}{\displaystyle {\tilde {V}}} of a substance is the occupied volume divided by the amount of substance at a given temperature and pressure. It is equal to the molar mass (M) divided by the mass density (ρ):

{\displaystyle V_{m}={\frac {M}{\rho }}}{\displaystyle V_{m}={\frac {M}{\rho }}}

It has the SI unit of cubic metres per mole (m3/mol),[1], although it is typically more practical to use the units cubic decimetres per mole (dm3/mol) for gases, and cubic centimetres per mole (cm3/mol) for liquids and solids.