How do you calculate the molar mass of a compound?

• A. Divide the total mass of the compound by Avogadro's number.
• B. Subtract the number of neutrons from the atomic mass of each element.
• C. Multiply the atomic number of each element by its abundance.
• D. Add the atomic masses of all the atoms in the compound.

Answer: (D)

Verified step by step guidance

1. Identify the chemical formula of the compound to determine the types and numbers of each atom present.
2. Look up the atomic mass of each element in the compound using the periodic table. The atomic mass is usually given in atomic mass units (amu).
3. Multiply the atomic mass of each element by the number of atoms of that element in the compound. This gives the total mass contribution of each element.
4. Add together the total mass contributions of all the elements in the compound to find the molar mass. The molar mass is expressed in grams per mole (g/mol).
5. Ensure that the units are consistent and that the final molar mass is reported with the appropriate number of significant figures based on the precision of the atomic masses used.