Introduction to Stoichiometry

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Mole ratios are obtained from the

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balanced chemical equation

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Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l). How many moles of iron can be made from 6 moles H₂?

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4 moles Fe

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12.00 moles of NaClO₃ will produce how many grams of O₂?

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576 g of O₂

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2 KClO₃ → 2 KCl + 3 O₂
How many moles of oxygen are produced when 6.7 moles of KClO₃ decompose completely?

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10.1 mol

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

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223 g

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CH₄ + 2 O₂ → CO₂ + 2 H₂O How many moles of carbon dioxide are produced from the combustion of 110 g of CH₄?

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6.85 mol

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How many grams of aluminum sulfate would be formed if 250g H₂SO₄ completely reacted with aluminum?

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290 g

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6CO₂ + 6H₂O --> C₆H₁₂O₆ + 6O₂
What is the total number of moles of water needed to make 2.5 moles of C₆H₁₂O₆?

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15

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What mass of O₂ will be needed to burn 36.1 g of B₂H₆?

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124 g O₂

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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