mole Quiz

Sophia, Maya, and Lily are working on a science project about greenhouse gases. They need to calculate the mass of one mole of CO₂, a common greenhouse gas. Can you help them figure it out?

• 12 g

• 32 g

• 28 g

• 44 g

Samuel, Harper, and Olivia are conducting a science experiment. They have 99 g of H₂O. Can you help them figure out how many moles this amount of H₂O represents?

• 1.5 moles

• 2 moles

• 3 moles

• 4 moles

During a science experiment, Daniel and Kai combined 0.250 moles of N₂. David, their classmate, was curious about the mass of N₂ they used. Can you help David find out the mass of 0.250 moles of N₂ used by Daniel and Kai?

• 14 g

• 28 g

• 32 g

• 56 g

Ethan, Elijah, and David are working on a chemistry project. They have 1.2 kg of Mg. How many moles of Mg do they have for their project?

• 0.5 moles

• 0.2 moles

• 0.1 moles

• 0.05 moles

Mason, Luna, and Liam are working on a chemistry project where they need to calculate the relative formula mass (M₁) of various substances. They are currently stuck on potassium sulfate. Can you help them figure it out?

• 212 g/mol

• 174 g/mol

• 136 g/mol

• 98 g/mol

Calculate the mass in grams of one atom of ³¹P. Give your answer in standard form to 3 significant figures.

• 1.34 x 10⁻²⁴ g

• 6.68 x 10⁻²⁴ g

• 3.34 x 10⁻²⁴ g

• 1.67 x 10⁻²⁴ g

Calculate the relative formula mass (Mr) of each of the following substances: sodium oxide

• 58 g/mol

• 40 g/mol

• 76 g/mol

• 22 g/mol

What mass of iron is formed when 240 g of iron(III) oxide reacts with carbon monoxide?

• 160 g

• 180 g

• 220 g

• 200 g

How many moles in each of the following? 12 mg of magnesium

• 2 moles

• 0.5 moles

• 3 moles

• 1 moles

What is the mass of each of the following? 0.100 moles of calcium hydroxide

• 16 g

• 12 g

• 8 g

• 4 g