Exam 4 Review

B₂H₆ + 3 O₂ →  2 HBO₂ + 2 H₂O
 What mass of O₂ will be needed to burn 36.1 g of B₂H₆?

• 13.8 g O₂

• 3.86 mol of O₂

• 124 g O₂

• 163 g O₂

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NGSS.HS-PS1-7

2Na + 2H₂O → 2NaOH + H₂
How many grams of hydrogen are produced if 120 g of Na are available?

• 
  5.2 g

• 2.6 g

• 7.9 g

• 13 g

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NGSS.HS-PS1-7

SO₂ + PCl₅ → SOCl₂ + POCl₃
How many grams of SOCl₂ is produced when 16.2g SO₂ react with 13.7g PCl_5? 

• 30.1g

• 
  26.4g

• 7.87g

• 19.8g 

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NGSS.HS-PS1-7

Cl₂ + 2 KBr → Br₂ + 2 KCl
How many grams of potassium chloride can be produced from 356 g of chlorine and 356 g of potassium bromide?

• 749 g

• 223 g

• 479 g

• 814 g

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NGSS.HS-PS1-7

Iron (III) oxide is formed when iron combines with oxygen in the air.  How many grams of Fe₂O₃ are formed when 16.9g of Fe reacts completely with oxygen?
4Fe_(s)+3O₂→2Fe₂O_3(s)

• 48.3 g

• 11.8 g

• 4.23 g

• 24.2 g

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NGSS.HS-PS1-2

NGSS.HS-PS1-7

Quinone, which is used in the dye industry and in photography, is an organic compound containing only C, H, and O. What is the empirical formula of the compound if you find that 0.105 g of the compound gives 0.257 g of CO₂ and 0.0350 g of H₂O when burned completely?

• CHO

• C₂H₁₀

• C₃H₂O

• C₆H₄O₂

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

A 0.2500 g sample of a compound known to contain carbon, hydrogen and oxygen undergoes complete combustion to produce 0.3664 g of CO₂ and 0.1500 g of H₂O. What is the empirical formula of this compound?

• CH₂O

• CHO

• COH₃

• C₂H₄O

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

Vanillin, a flavoring agent, is made up of carbon, hydrogen, and oxygen atoms. When a sample of vanillin weighing 2.500g burns in oxygen, 5.79 g of carbon dioxide and 1. 18 g of water are obtained. What is the empirical formula?

• C₈H₈O₃

• C₆H₁₂O₆

• CH₁₃

• CHO

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NGSS.HS-PS1-2

NGSS.HS-PS1-7

When 12 moles of O₂ reacts with 1.1 mole of C₁₀H₈ what is the limiting reactant?  C₁₀H₈ + 12 O₂ → 10 CO₂ + 4 H₂O

• C₁₀H₈

• Water

• Carbon Dioxide

• Oxygen

Tags

NGSS.HS-PS1-7

2 Al + 3 Cl₂ →2 AlCl₃. 
If 2 moles of aluminum and 2 moles of chlorine are reacted, identify the limiting reactant.

• Al

• AlCl₃

• Cl₂

Tags

NGSS.HS-PS1-7