Question

How do you Calculate the Gram Atomic Weight of a compound or molecule?

a) By adding the atomic weights of all the atoms in the compound.
b) By multiplying the atomic weight by the number of atoms in the compound.
c) By dividing the molar mass by Avogadro's number.
d) By taking the square root of the atomic weights of all the atoms in the compound.

Answer 1

The gram atomic weight of a compound, or molar mass, is calculated by adding together the atomic weights of each atom in the compound, found on the periodic table, and multiplying by the number of each type of atom.

Step-by-step explanation:

To calculate the gram atomic weight of a compound, which is also known as molar mass, you add the atomic weights of all the atoms in the compound. You can find the atomic weights on the periodic table. For each element in the compound, multiply the atomic weight by the number of atoms of that element in the molecular formula, then add all of these products together to get the total molar mass. The molar mass is equivalent to the molecular mass in atomic mass units (amu), but it is expressed in grams per mole (g/mol).

For example, the molar mass of water (H₂O) is calculated by adding 2 times the atomic mass of hydrogen (1.008 g/mol each) to the atomic mass of oxygen (15.999 g/mol), yielding approximately 18.015 g/mol.