Molar Mass and Mole Conversion

How many molecules are there in 31.8 moles of water?

• 5.28 x 10^-23 molecules

• 1.91 x 10²⁵ molecules

• 5.28x 10-²⁵

• 1.91 x 10²²

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

• 1 mole C₆H₁₂O₆= 180.19 g

• 1 mole = 22.4 L 

• 1 mol = 6.02x 10²³ particles 

• more than one

A beaker contains 3.0 moles of copper. How many grams of copper are in the beaker?

• 190.7 g

• 21.2 g

• 0.047 g

• 86.3 g

What is the molar mass of lead (II) sulfate?

• 303.27 g/mol

• 255.27 g/mol

• 163.87 g/mol

• 372.27 g/mol

What is the molar mass of gold (III) chloride?

• 96 g

• 130 g

• 232.5 g

• 303.3 g

How many moles are present in 32.3 grams of carbon dioxide?

• 44.01 moles

• 1421.52 moles

• 32.3 moles

• 0.73 moles

What is the mass in grams of 5.90 mol C₈H_18?

• .0512 g

• 19.4 g

• 673 g

• 389 g

What is the mass of one mole of ammonium carbonate?

• 144g

• 138g

• 96g

• 74g

36.0 g of Be contains how many moles?

• 0.25 mol

• 4.0 mol

• 45 mol

• 320 mol

4.0 moles of water would have what mass?

• 72 g

• 23 g

• 68 g

• 4.5 g