Molar Mass and Avogadro's Number

What is the molar mass of NaCl?

• 49.46 g/mol

• 58.44 g/mol

• 152.92 g/mol

• 161.90 g/mol

Tags

NGSS.HS-PS1-7

What is the molar mass of MgF₂?

• 62.31 g/mol

• 67.62 g/mol

• 43.31 g/mol

• 86.62 g/mol

What is the molar mass of Al₂O₃?

• 42.98 g/mol

• 69.96 g/mol

• 85.96 g/mol

• 101.96 g/mol

What is the molar mass of Al(NO₃)₃?

• 62.01 g/mol

• 88.99 g/mol

• 151.00 g/mol

• 213.01 g/mol

How many atoms of iodine are in a mole of iodine?

• 53

• 63.55g

• 126.9

• 6.02 x 10²³

Tags

NGSS.HS-PS1-7

How many moles are in 8.30 X 10²³ molecules of H₂O?

• 1.38 X 10²³ moles H₂O

• 1.38 moles H₂O

• 2 moles H₂O

• 1 mole H₂O

Tags

NGSS.HS-PS1-7

• 16 g/mol

• 18 g/mol

• 20 g/mol

• 22 g/mol

Tags

DOK Level 2: Skill/Concept

How many Mg atoms are present in 3.00 moles of MgCl2?

• 81 x 10^24

• 3.02 x 10^24

• 12.0 x 10^25

• 16.0 x 10^23

Tags

NGSS.HS-PS1-7

What is the molar mass of SrS?

• 87.62 g/mol

• 119.69 g/mol

• 151.76 g/mol

• 32.07 g/mol

What is the molar mass of NaOH?

• 40.00 g/mol

• 50.00 g/mol

• 60.00 g/mol

• 70.00 g/mol