Mastering Molar Mass

• 18.015 g/mol

• 20.02 g/mol

• 16.00 g/mol

• 22.99 g/mol

Tags

NGSS.HS-PS1-7

• Add the atomic masses of 1 carbon atom and 2 oxygen atoms

• Multiply the atomic mass of carbon by 2 and add to the atomic mass of oxygen

• Add the atomic masses of 2 carbon atoms and 1 oxygen atom

• Multiply the atomic mass of oxygen by 2 and subtract from the atomic mass of carbon

What is the molar mass of sodium chloride (NaCl)?

• 58.44 g/mol

• 35.45 g/mol

• 22.99 g/mol

• 40.00 g/mol

• Add the molar masses of Mg, S, O, and H separately and then multiply by 7

• 180.16 g/mol

• 342.30 g/mol

• 154.17 g/mol

• 198.17 g/mol

• 17.034 g/mol

• 18.038 g/mol

• 15.034 g/mol

• 17.031 g/mol

Which of the following is true about calculating the molar mass of a compound?

• It is the sum of the atomic masses of all atoms in a molecule, measured in kilograms

• It is the sum of the atomic masses of all atoms in a molecule, measured in grams per mole

• It only considers the heaviest atom in the compound for calculation

• It is always equal to the atomic mass of the element with the highest electronegativity in the compound

• 100.09 g/mol

• 40.08 g/mol

• 60.01 g/mol

• 44.01 g/mol

• Add the molar masses of 2 N atoms, 8 H atoms, 1 S atom, and 4 O atoms

• 158.03 g/mol

• 119.02 g/mol

• 194.19 g/mol

• 174.11 g/mol