Question

Calculate the molar mass of each of the following compounds:

a) C₄H₁₀
b) CO₂
c) H₂SO₄
d) NaCl

Answer 1

To calculate the molar mass of a compound, sum up the atomic masses of all the atoms in the compound. The molar masses of C₄H₁₀, CO₂, H₂SO₄, and NaCl are 58.14 g/mol, 44.01 g/mol, 98.09 g/mol, and 58.44 g/mol respectively.

Step-by-step explanation:

To calculate the molar mass of a compound, you need to sum up the atomic masses of all the atoms in the compound.

1. For C₄H₁₀:

• The molar mass of carbon (C) is 12.01 g/mol.
• The molar mass of hydrogen (H) is 1.01 g/mol.
• Multiply the atomic masses by the number of atoms present in the compound:

(4 × 12.01 g/mol) + (10 × 1.01 g/mol) = 58.14 g/mol

For CO₂:

• The molar mass of carbon (C) is 12.01 g/mol.
• The molar mass of oxygen (O) is 16.00 g/mol.
• Multiply the atomic masses by the number of atoms present in the compound:

(1 × 12.01 g/mol) + (2 × 16.00 g/mol) = 44.01 g/mol

For H₂SO₄:

• The molar mass of hydrogen (H) is 1.01 g/mol.
• The molar mass of sulfur (S) is 32.07 g/mol.
• The molar mass of oxygen (O) is 16.00 g/mol.
• Multiply the atomic masses by the number of atoms present in the compound:

(2 × 1.01 g/mol) + (1 × 32.07 g/mol) + (4 × 16.00 g/mol) = 98.09 g/mol

For NaCl:

• The molar mass of sodium (Na) is 22.99 g/mol.
• The molar mass of chlorine (Cl) is 35.45 g/mol.
• Multiply the atomic masses by the number of atoms present in the compound:

(1 × 22.99 g/mol) + (1 × 35.45 g/mol) = 58.44 g/mol