Chemical Compounds Review

What is the molar mass of CO₂?

• 44.01 g/mol
• 56.02 g/mol
• 58.93 g/mol
• 117.06 g/mol

Which one is empirical?

• H₂O₂
• C₂H₆O₁₂
• CaCl₂
• N₂O₈

What is the mass of 2.50 mol of oxygen gas O₂?

• 40 g
• 80 g
• 16 g
• 32 g

Tags

NGSS.MS-PS1-1

What is Avogadro's Number?

• 6.02 x 10²³

• 6.02 x 10³

• 600

• 6.0

What is the molar mass of MgCl₂?

• 24.31 g/ml
• 95.21 g/mol
• 59.76 g/mol
• 70.90 g/mol

What is the percent composition by mass of sulfur in the compound MgSO₄?

• 20%

• 27%

• 46%

• 53%

What is the percent by mass of magnesium in MgO?

• 20%
• 40%
• 50%
• 60%

What is the percent composition of Calcium in CaF₂?

• 51.3%
• 48.7%
• 23.4%
• 3%

What is the molar mass of Zn(C₂H₃O₂)₂

• 183.46g/mol

• 169.89L

• 120.65g/mol

• 236.54M

What is the percent composition by mass of sulfur (S) in the compound MgSO₄?

• 20.22%

• 19.85%

• 26.64%

• 28.64%