#8C Quizziz Stoichiometry: Percent Composition Determining

A formula with the lowest whole # ratio of elements in a compound is called

• Molecular Formula
• Chemical Formula
• Empirical Formula 
• Distance Formula

Which of the following is considered an empirical formula?

• CH₃COOH
• C₆H₁₂O₆
• H₂O

What is the empirical formula for the following:
Pb₅Cr₅O₂₀

• Pb₂Cr₂O₁₀
• PbCr₂O₇
• Pb₉Cr₄O₂
• PbCrO₄

What is the percent composition of oxygen in MgO?

• 20%

• 40%

• 50%

• 60%

What is the percent composition of magnesium in MgO?

• 20%

• 40%

• 50%

• 60%

What is the percent composition of sodium in NaCl?

• 39%

• 61%

• 35%

• 65%

What is the percent composition of chlorine in NaCl?

• 39%

• 61%

• 35%

• 65%

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

• 20%

• 27%

• 46%

• 53%

What is the percent composition of magnesium in the compound MgSO₄?

• 20%

• 27%

• 46%

• 53%

What is the percent composition of Benzene, C₆H₆?

• C = 50%
  H = 50%
• C = 85.7 %
  H = 14.3%
• C = 92.2%
  H = 7.8%
• C = 71.9%
  H = 28.1%

Tags

NGSS.HS-PS1-1