Stoichiometry

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Mole Ratios used for conversions are derived from:

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the coefficients of the balanced chemical equation

Front

N₂ + 3H₂ → 2NH₃ What is the mole ratio between N₂ and NH₃ in the above reaction?

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2 moles NH₃ / 1 moles N₂

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Mole ratio between silver nitrate and copper(II) nitrate in the reaction: 2AgNO₃ + Cu --> Cu(NO₃)₂ + 2Ag

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2 mol AgNO₃ / 1 mol Cu(NO₃)₂

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4NH₃ + 5O₂ --> 4NO + 6H₂O
What is the total number of moles of H₂O produced when 12 mole of NH₃ is completely consumed?

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18

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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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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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N₂ +  3H₂ → 2NH₃ 
How many moles of hydrogen are needed to react with 2 moles of nitrogen?

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6

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2H₂ + O₂ → 2H₂O
How many moles of water can be produced if 8 moles H₂ are used?

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8 moles

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How many moles does 3.0 x 10^23 atoms of Neon contain?

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0.50 moles

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How much is 0.5 mole of Neon equivalent to in grams?

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10 g