Mole Conversions

How many moles are in 3.01 x 10²² atoms of magnesium?

• 0.05 moles

• 1.81 x 10⁴⁶ moles

• 5.00 x 10²¹ moles

• 5 moles

Tags

NGSS.HS-PS1-7

What is the molar mass of table salt (NaCl)?

• 116.886 g/mol
• 35.453 g/mol
• 22.990 g/mol
• 58.443 g/mol

How many moles are in 16.94g of water?

• 16.94 mol H₂O
• 0.9401 mol H₂O
• 305.3 mol H₂O
• 1.063 mol H₂O

How many molecules are in 2.5 mol of NaCl?

• 1.51x10²³ molecules

• 146 molecules

• 4.15 molecules

• 1.51x10²⁴ molecules

Tags

NGSS.HS-PS1-7

How many moles are in 3.01 x 10²² atoms of magnesium?

• 0.05 moles

• 1.81 x 10⁴⁶ moles

• 5.00 x 10²¹ moles

• 5 moles

What are the units for molar mass?

• grams

• amu

• g/mol

• liters

What is the mass of 0.89 mol of CaCl₂?

• 110.98 grams

• 0.0080 grams

• 98.77 grams

• 124.70 grams

Tags

NGSS.HS-PS1-7

The number 6.02 x 10²³ is called...

• Rutherford's number

• Bohr's number

• Thomson's number

• Avogadro's number

What is the method of problem solving used in chemistry to convert from one unit to another?

• mole

• dimensional analysis

• conversion factor

• molar mass

What is the mass (in grams) of one mole of a substance?

• molar mass

• grams

• conversion factor

• 6.02 x 10²³