Molar Mass

What is the molar mass of Carbon?

• 6
• 12
• 20
• 40

What is the molar mass of CO₂ to the ones place?

• 12
• 16
• 32
• 44

How many particles are in a mole?

• 602
• 602 million
• 602 moles
• 6.02 x 10²³

What are the units for molar mass?

• grams
• amu
• grams/mole
• liters

Tags

NGSS.HS-PS1-7

What is the molar mass of B₂(CO₃)₃?

• 81.632 g/mol
• 94.842 g/mol
• 38.822 g/mol
• 201.648 g/mol

How many moles of atoms in 1 mole of CO₂?

• 1
• 3
• 3 x 6 x 10²³
• 1 x 6 x 10²³

Which compound has the smallest molar mass?

• CO
• CO₂
• H₂O
• H₂O₂

Which has a greater mass: 1 mole of scandium or 2 moles of boron?

• scandium
• boron
• neither
• more information is needed.

How many molecules of sugar (C₆H₁₂O₆) are in a mole?

• 24 molecules
• 180 molecules
• 180 g
• 6.02 x 10²³ molecules

The mole concept is important in chemistry because

• it allows us to distinguish between elements and compounds.
• atoms and molecules are very small and the mole concept allows us to count atoms and molecules by weighing macroscopic amounts of material.
• it establishes a standard for reaction stoichiometry.
• it provides a universally accepted standard for mass.