molar mass- oles

Multiple Choice

What is the molar mass of sodium?

• 11

• 23

• 45.98

• 3

Multiple Choice

What is the molar mass of CO₂?

• 12

• 16

• 32

• 44

Multiple Choice

Calculate the molar mass of Ba(C₂H₃O₂)₂

• 255.3 g/mol

• 237.3 g/mol

• 228.3 g/mol

• 196.3 g/mol

Multiple Choice

How many particles are in a mole?

• 602

• 602 million

• 602 moles

• 6.02 x 10²³

Multiple Choice

How many molecules of bromine are there in 0.045 mol of bromine?

[Avogadro Constant ; 6.02 X 10²³ mol^-]

• 2.7 X 10²²

• 3 X 10²³

• 7.9 X 10²⁴

• 1.2 X 10²⁵