Mass to mass worksheet  example
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Mass to mass worksheet example

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Mass to mass worksheet  example Mass to mass worksheet example Document Transcript

  • Name ________________________________ Mass-to-Mass Worksheet Start with # N2 (g) + 3H2 (g) → 2NH3 (g) and unit given 5.40 g H2 1 mol H2 2 mol NH3 17.03 g NH3 3).Molar mass to = 31 g NH3 convert from mol 2.02 g H2 3 mol H2 1 mol NH3 back to g 1). Molar mass to convert g to 2).Use mole ratio to moles go from 1 substance to the next substance…remember…first step (g to mole)…mole ratio…third step (mole to g)…only sometimes you don’t dosome of that… Work must be shown on every problem that has calculations…no work = no creditUse the following reaction for problems 1-4… S8 (s) + O2 (g) + H2 (g) →H2SO4 (aq) 1. In the synthesis of sulfuric acid 15.3 mol of sulfur react completely. a. How many moles of oxygen are should be used? (Hint: 2nd step only) b. How many moles of sulfuric acid can be made from the complete reaction of sulfur? (Hint: 2nd step only) c. How many grams of sulfuric acid can be made? (hint: second and third steps) 2. How many moles of sulfuric acid are made the burning of 87.1 grams of sulfur (S8)? (hint: 1st and 2nd steps) 3. How many grams of sulfuric acid could be made from 435 grams of oxygen gas? (hint: all three steps) 4. How many grams of sulfuric acid could be made from 65.9 grams of hydrogen gas? (hint: all three steps) 5. Write and balance the reaction that occurs between iron (III) chlorate solution and potassium hydroxide solutions. a. How many moles of iron (III) hydroxide can be recovered if 14.2 moles of potassium hydroxide were used up? (Hint: second step only) b. What mass of iron (III) hydroxide will precipitate out from 1.35 x 10-3 moles of iron (III) chlorate? (hint: second and third steps) c. How many grams of potassium chlorate could be recovered from 396.5 grams of iron (III) chlorate? (hint: all three steps)