Stoichiometry Review

Front

Mole ratios are obtained from the

Back

balanced chemical equation

Front

What is the mole ratio of H₂O to H₃PO₄ in the following chemical equation?   P₄O₁₀ + 6 H₂O --> 4 H₃PO₄ 

Back

6:4

Front

2Al + 3H₂SO₄ -> Al₂(SO₄)₃ + 3H₂
How many grams of aluminum sulfate would be formed if 250g H₂SO₄ completely reacted with aluminum? Options: 0.85 g, 290 g, 450 g, 870 g

Back

290 g

Front

For the reaction Cl₂ + 2KBr → Br₂ + 2KCl, how many grams of potassium chloride can be produced from 356 grams potassium bromide? Options: 749 g, 225 g, 479 g, 814 g

Back

225 g

Front

When does a chemical reaction stop?

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When the limiting reactant is used up

Front

How many grams are in 7.8 moles of NaCl?

Back

452 grams

Front

Balance the reaction: CaC₂(s) + H₂O(l) --> C₂H₂(g) + Ca(OH)₂(aq)

Back

1,2,1,1

Front

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

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5.2 g

Front

B₂H₆ + 3O₂ --> 2 HBO₂ + 2 H₂O
What mass of O₂ will be needed to burn 36.1 g of B₂H₆? Options: 13.8 g O₂, 3.86 mol of O₂, 124 g O₂

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124 g O₂

Front

4 Al + 3 O₂ –> 2 Al₂O₃ How much aluminum is needed to react with 45 grams of O₂?

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1.875 moles