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Questions and Answers
What is the value of Avogadro’s number?
What is the value of Avogadro’s number?
- $7.022 \times 10^{23}$
- $8.022 \times 10^{23}$
- $5.022 \times 10^{23}$
- $6.022 \times 10^{23}$ (correct)
What is the molar mass of lithium carbonate, Li2CO3?
What is the molar mass of lithium carbonate, Li2CO3?
- 90.08 g/mol (correct)
- 42.39 g/mol
- 73.89 g/mol
- 60.03 g/mol
How many moles of CO2 are present in 5.00 grams of CO2?
How many moles of CO2 are present in 5.00 grams of CO2?
- 0.10 mol (correct)
- 0.15 mol
- 0.05 mol
- 0.20 mol
What is the mass of 2.50 moles of iron (Fe)?
What is the mass of 2.50 moles of iron (Fe)?
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How many atoms are present in 0.75 moles of carbon (C)?
How many atoms are present in 0.75 moles of carbon (C)?
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