Molar mass of FeCl₃ 162.204 g/mol
Molar mass of C₄H₁₀O is 74.1212 g/mol
Molar mass of Cu(NO₃)₂ is 187.5594 g/mol
<u>Step-by-step explanation:</u>
Molar mass is also termed as molecular mass of the compound. So it is the measure of the amount of mass present in the given molecule. It can be obtained by adding the products of number of atoms with their molecular mass.
For example, in order to find the molar mass of FeCl₃, the molecular mass of Fe is noted as 55.845 g/mol and the molecular mass of Cl is noted as 35.453 g/mol.
As FeCl₃ contains one atom of Fe and 3 atoms of Cl, then the
Molar mass = (Number of Fe atoms × Molecular mass of Fe) + ( Number of Cl atoms × Molecular mass of Cl)
Molar mass of FeCl₃ = (1×55.845)+(3×35.453)=162.204 g/mol.
Similarly, the molar mass of C₄H₁₀O will be
Molar mass = (4×Mass of C) + (10×Mass of H) + (1 × Mass of O)
Molar mass = (4×12.0107)+(10×1.00784)+(1×16)=74.1212 g/mol
Then the molar mass of Cu(NO₃)₂ will be
Molar mass = (1× Mass of Cu) + (2×Mass of N)+(6×Mas of Oxygen)
Molar mass = (1×63.546)+(2×14.0067)+(6×16)
Molar mass = 187.5594 g/mol
