Molar calculations 1 (atoms and molecules)

How many particles are in one mole of a substance?

• 0.6 x 10²³

• 6 x 23¹⁰

• 6 x 10²³

• The molecular mass of the substance in grams

What is the mass of 3 moles of Chlorine atoms?

• 35.5 g

• 9 g

• 106.5 g

• 90 g

What is the mass of 3 moles of Chlorine molecules?

• 35.5 g

• 213 g

• 106.5 g

• 90 g

What is the mass of 0.5 moles of carbon?

• 12 g

• 120 g

• 6 g

• 0.6 g

How many moles are in 24 grams of carbon

• 2 moles

• 0.5 moles

• 6 x 10²³ moles

• 24 moles

How many moles are there in 36 grams of H₂O

• 2

• 4

• 6

• 8

How many molecules are there in 36 grams of H₂O

• 6 x 10²³

• 1.2 x 10²⁴

• 3.6 x 10²⁴

• 2.4 x 10²⁴

How many atoms are there in 36 grams of H₂O

• 6 x 10²³

• 1.2 x 10²⁴

• 3.6 x 10²⁴

• 2.4 x 10²⁴

Which of the following would have more mass?

• 1 mole of Lithium

• 1 mole of Oxygen

• 1 mole of Carbon

• None, all are equal

Which has more molecules?

• 1 mole H₂O
• 1 mole Al(OH)₃
• 1 mole NaCl
• There are all the same

Tags

NGSS.MS-PS1-1