Mole Problem

How many moles are 2.85 x 10²⁰ atoms of iron?

• 4.73 x 10^-4 moles

• 1.72 x 10⁴ moles

• 1.72 x 10^-42 moles

• 4.73 x 10⁴ moles

How many moles of copper are 4.57 x 10¹⁵ atoms of copper?

• 7.59 x 10^-9 moles

• 2.75 x 10^-33 moles

• 7.59 x 10⁹ moles

• 2.75 x 10³³ moles

What is the mass of 1 mole of carbon?

• 6.02 x 10²³ g

• 12.01 g

• 24 g

• 1 g

How many moles are in 35 grams of chlorine gas (Cl₂)?

• 1 mol

• 2482 mol

• 1225 mol

• 0.5 mol

If you have 3 moles of sodium chloride (NaCl), how many formula units do you have?

• 0.5 moles

• 0.86 moles

• 1 mole

• 1.5 moles

Tags

DOK Level 2: Skill/Concept

How many atoms are in 2 moles of helium (He)?

Which has more molecules?

• mole H₂O

• mole Al(OH)₃

• mole NaCl

• They are all the same

Tags

NGSS.HS-PS1-7

The mass of 1 mole is known as

• A mole

• Molar mass

• Percent Composition

• Grams

Which has more molecules?

• mole H₂O

• mole Al(OH)₃

• mole NaCl

• They are all the same