Mole Conversions

48.86 g of cobalt is equal to how many moles of cobalt, Co?

• 2879 moles

• 8.291 moles

• .8291 moles

• .829 moles

How many molecules of water are in a 821.3 g sample?

• 45.58 molecules

• 8.232 x 10²⁵ molecules

• 8.909 x 10²⁷ molecules

• 2.744 x 10²⁵ molecules

Tags

NGSS.HS-PS1-7

How many moles of sodium chloride are in a 321.8 g sample?

• 18810 moles

• 3.315 x 10²⁴ moles

• 5.507 moles

• 4.767 moles

Tags

NGSS.HS-PS1-7

How many formula units of calcium chloride are in a 25.69 g sample?

• 1.394 x 10²³ F.U.'s

• 2851 F.U.'s

• .2315 F.U.'s

• 3.845 x 10²⁵ F.U.'s

Tags

NGSS.HS-PS1-7

What would be the mass of 9.76 x 10²² particles of SrCl₂?

• .1622 g

• 25.7 g

• 20.0 g

• .3589 g

Which conversion factor should be used for the following question " How many molecules are there in 4.00 moles of glucose, C₆H₁₂O₆? 

• 1 mole = 78.12 g
• 1 mole = 22.4 L 
• 1 mol = 6.02x 10²³ particles 
• more than one

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

Tags

NGSS.HS-PS1-7

How many molecules of sugar (C₆H₁₂O₆) are in a mole?

• 24 molecules
• 180 molecules
• 180 g
• 6.02 x 10²³ molecules

Which of the following dimensional analysis setups will correctly convert 2.50 moles of sodium to grams of sodium?

• A
• B
• C
• D

Tags

NGSS.HS-PS1-7

How many atoms are in a 3.56 g sample of Cu?

• 3.37 x 10²² Cu atoms
• 6.02 x 10²³ Cu atoms
• 0.056 Cu atoms
• 1 Cu atom