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Unit 8 – Stoichiometry Worksheet 2:
Problems involving Non-Mole Givens
Complete the following problems on a SEPARATE PIECE OF PAPER.
For each of the problems below, follow your steps for success!:
1. Write the balanced chemical equation
2. Identify the given (with units) and what you want to find (with units) in your BCA table.
3&4. Use the mole ratios to complete the organizational BCA table and find your unknown.
Show your work beneath the table! Check sig figs, BOX final answer with units and label.
1. Using the Hoffman apparatus for electrolysis, a chemist decomposes 36 g of water into its
gaseous elements. How many grams of hydrogen gas should she get (theoretical yield)?
2. Recall that liquid sodium reacts with chlorine gas to produce sodium chloride. You want to
produce 581 g of sodium chloride. How many grams of sodium are needed?
3. You eat 180.0 g of glucose (90 M&Ms). If glucose, C6H12O6, reacts with oxygen gas to
produce carbon dioxide and water, how many grams of oxygen will you have to breath in to
burn the glucose?
4. Determine the theoretical yield (in grams) of lithium hydroxide produced when 0.38 g of
lithium nitride reacts with water to produce ammonia (NH3) and lithium hydroxide.
5. Determine the mass of carbon dioxide produced when 0.85 g of butane reacts with oxygen
according to the following unbalanced equation:
___C4H10 + ___O2  ___CO2 + ___H2O
6. Determine the mass of antimony produced (theoretical yield) when 0.46 g of diantimony
trioxide reacts with carbon according to the following unbalanced equation:
___Sb2O3 + ___C  ___Sb + ___CO
7. Hydrogen Peroxide (H2O2) decomposes to make water and oxygen gas. What mass of
hydrogen peroxide must decompose to produce 0.77 g of water?
8. What mass of carbon monoxide must react with oxygen to produce 0.69 g of carbon dioxide?
WS 2 – Check your answers:
(1) 4.0 g H2
(2) 229 g Na
(7) 1.5 g H2O2 (8) 0.44 g CO
Modeling Chemistry
(3) 191.8 g O2
(4) 0.78 g LiOH (5) 2.6 g CO2
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(6) 0.38 g Sb
U10 Ws 2 v1.5