7.6.2: Practice Stoichiometry part 2
- Page ID
- 424687
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Exercise \(\PageIndex{1}\)
2 Mg (s) + O2 (g) \(\rightarrow\) 2 MgO (s)
In the reaction above, how many grams of MgO would be produced from 6.87 g of Mg and 5.22 g O2?
- Answer
-
11.4 g MgO (Mg is limiting)
Exercise \(\PageIndex{1}\)
2 NH3 (g) + 3 O2 (g) \(\rightarrow\) 3 H2O (g) + N2O3 (g)
In the reaction above, how many grams of N2O3 would be produced from 12.76 g of NH3 and 17.44 g O2?
- Answer
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13.81 g N2O3 (O2 is limiting)
In the reaction above, how many grams of N2O3 would be produced from 0.765 moles NH3 and 1.206 moles O2?
- Answer
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29.1 g (NH3 is limiting)
Exercise \(\PageIndex{1}\)
2 HgO (s) \(\rightarrow\) 2 Hg (l) + O2 (g)
If you heat 375.0 grams of HgO and obtain 248.4 g Hg, what is your percent yield?
- Answer
-
71.52 % (expect 347.3 g Hg product)
Exercise \(\PageIndex{1}\)
6 Li (s) + N2 (g) \(\rightarrow\) 2 Li3N (s)
If you heat 38.44 grams of Li (with plenty of nitrogen) and obtain 44.74 g Li3N, what is your percent yield?
- Answer
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69.57 % (expect 64.31 g Li3N product)
Exercise \(\PageIndex{1}\)
Fe2S3 (s) + 6 HCl (g) \(\rightarrow\) 2 FeCl3 (s) + 3 H2S (g)
If you treat 17.82 grams of Fe2S3 (with plenty of HCl) and obtain 21.36 g FeCl3, what is your percent yield?
- Answer
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76.83 % (expect 27.80 g FeCl3 product)