Mole Concepts

How many atoms of iodine are in a mole of iodine?

• 53
• 63.55g
• 126.9
• 6.02 x 10²³

Tags

NGSS.MS-PS1-1

What is the molar mass of NaCl?

• 58.45g/mol
• 28g/mol
• 12g/mol
• 6.02 x 10²³

What would be the mass of 1.5 mol H₂O ?

• 20 g

• 27 g

• 32 g

• 40 g

Which has more molecules?

• 1 mole H₂O
• 1 mole Al(OH)₃
• 1 mole NaCl
• There are all the same

Convert 4.5x10²⁴ atoms to moles

• 0.747 particles

• 0.747 mol

• 2.71x10⁴⁷ mol

• 2.71x10⁴⁷ particles

Tags

NGSS.HS-PS1-7

Convert 5g of carbon to moles

• 60 mol

• 17 mol

• 0.42 mol

• 7 mol

Convert 25 g of NaBr to molecules

• 102.96 molecules

• 0.24 molecules

• 1.45x10²³ molecules

• 2.34 x 10²⁰molecules

Tags

NGSS.HS-PS1-7

Convert 5.11x10²³ atoms of lithium to moles?

• 1.18

• 0.351

• 1.34

• 0.849

Convert 0.454 moles of neon (Ne) to liters?

• 49.34 L

• 101.17 L

• 10.17 L

• 0.0202 L

Which shows the correct method of determining the percent composition of Sodium in Na₂CO₃?

• %Na = (22.99g/106g) x 100

• %Na = (22.99g/106g) / 100

• %Na = (45.98g/106g) x 100

• %Na = (106/45.98g) x 100