Chemistry Molar Mass

How do we calculate the molar mass of H₂O?

• 2+16=18

• 1+16=17

• 2+32=34

• 1+31=32

What is the molar mass of CO₂?

• 12 g/mol

• 16 g/mol

• 32 g/mol

• 44 g/mol

Find the molar mass of KCl

• 36 g/mol

• 78 g/mol

• 74 g/mol

• 178 g/mol

Find the molar masses of the following compounds: (NH₄)₂CO₃

• 303.3 g/mole

• 102.9 g/mole

• 74.1 g/mole

• 160.0 g/mole

• 96.0 g/mole

Find the molar masses of the following compound

C₆H₁₂O₆

• 303.3 g/mole

• 102.9 g/mole

• 180.0 g/mol

• 160.0 g/mole

• 96.0 g/mole

How many moles are in 10.7 grams of KNO3?

• 0.1058mol

• 1.058x10^-1

• 1.06x10^-1

• 2.0x10^1

What is the molar mass when you have 4 moles of CO₂?

• 176 grams

• 54 grams

• 128 grams

• 280 grams

What would the mass of 2.5 moles of ethanol (C₂H₅OH) be?

Tags

NGSS.HS-PS1-7

How many moles are in a 20.0 g sample of XY? (3 significant figures, include units)

How many moles are in a 5.00 g sample of XY?