How many particles are in a mole?

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

How many atoms of H in 2 moles of CH₄?

• 4
• 8
• 4 x 6 x 10²³
• 8 x 6 x 10²³

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

• 1 g Ti / 47.84 mol Ti
• 1 mol Ti / 47.84 g Ti
• 47.84 mol / 1 g Ti
• 47.87 g Ti / 1 mol Ti

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

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

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

• kilogram
• gram
• kelvin
• mole

What do we call the SI unit for amount of a substance?

• Avogadros number
• kilogram
• mole
• liter

What is the molar mass of Carbon?

• 6
• 12
• 20
• 40

What does not belong?

• particles
• atoms
• elements
• molecules

How many moles of carbon atoms are there in 5g of carbon?

• 60 mol
• 17 mol
• 0.42 mol
• 7 mol

What is the mass of 54.3x10⁴⁵molecules of BeO?

• 3.27x10⁷⁰ g
• 9.01 x10²²g
• 2.25 x10²⁴ g
• 1.31 x10⁶⁹g