Quantitative chemistry

What is the relative formula mass of CO₂?

• 44
• 32
• 16
• 56

What is the unit for molar mass?

• no unit
• g
• g mol^-1

Tags

NGSS.HS-PS1-7

What is the formula for iron(III) oxide?

• FeO
• Fe₃O
• Fe₃O₂
• Fe₂O₃

Calculate the number of gold atoms in a 4 mole sample of gold.

• 2.41x10²⁴
• 3.01x10²³
• 4.82x10²⁴
• 6.02x10²³

Tags

NGSS.HS-PS1-7

Calculate the number of moles of Aluminum in a 2.04 mole sample of aluminum oxide, Al₂O₃.

• 2.04 moles
• 4.08 moles
• 6.12 moles
• 1.02 moles

Tags

NGSS.HS-PS1-7

What is the mass of one mole of aluminum?

• 27 g
• 13 g
• 54 g
• 14 g

Moles of Al₂O₃ in 40g

• 40%
• 0.39
• 4080
• 2.55

Mass of one mole of Mg(OH)₂

• 58g
• 42g
• 82g
• 41g

Tags

NGSS.HS-PS1-7

Formula mass of CaCO₃

• 100
• 100g
• 50
• 50g

What is the unit of measurement for the amount of a substance

• Volume
• Mass
• Concentration
• Moles