The Mole

A mole of Neon contains
6.02 x 10²³ _____.

• atoms
• formula units
• ions
• molecules

Tags

NGSS.HS-PS1-7

Molar mass is in units of ________.

• grams
• grams/mole
• mole
• moles/gram

Which conversion factor would you use to calculate correctly the mass of 2 moles of any element?

• multiply by molar mass
• divide by molar mass
• multiply by Avogadro's number
• divide by Avogadro's number

Which compound has the smallest molar mass?

• CO
• CO₂
• H₂O
• H₂O₂

Which represents the greatest mass of sulfur?

• 1 gram of sulfur
• 1 molecule of sulfur
• 0.5 mole of sulfur
• 6.02 x 10²³ atoms of sulfur

Tags

NGSS.HS-PS1-7

How many moles are in 1.204 x 10²⁴ molecules of CO?

• 2 moles
• 5 grams
• 6.02 moles
• 1.2 moles

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

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

What is the mass of 2.50 mol of oxygen gas O₂?

• 40 g
• 80 g
• 16 g
• 32 g

What is the mass in grams of 6.25 mol of Cu (NO₃)₂?

• 126 g
• 785 g
• 625 g
• 1172 g

Avogadro's number of representative particles is equal to one_____.

• kilogram
• gram
• kelvin
• mole