Molecules to Mass

What is the molecular mass of water (H2O)?

• 18 g/mol

• 20 g/mol

• 16 g/mol

• 22 g/mol

Which of the following molecules has the highest molecular mass?

• Oxygen (O2)

• Carbon Dioxide (CO2)

• Methane (CH4)

• Nitrogen (N2)

Tags

NGSS.MS-PS1-1

How many moles are in 36 grams of water (H2O)?

• 1 mole

• 2 moles

• 0.5 moles

• 3 moles

What is the mass of one mole of carbon atoms?

• 12 g

• 6 g

• 24 g

• 18 g

Which of the following is the correct formula to calculate the number of moles from mass and molar mass?

If you have 44 grams of CO2, how many moles do you have?

• 1 mole

• 2 moles

• 0.5 moles

• 3 moles

What is the molecular mass of glucose (C6H12O6)?

• 180 g/mol

• 160 g/mol

• 200 g/mol

• 150 g/mol

Which molecule has a greater mass: 1 mole of H2O or 1 mole of CO2?

• 1 mole of CO2

• 1 mole of H2O

• Both have the same mass

• Cannot be determined

Tags

NGSS.HS-PS1-7

What is the mass of 2 moles of nitrogen gas (N2)?

• 56 g

• 28 g

• 14 g

• 112 g

How many molecules are there in one mole of a substance?