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Scan_Doc0031 - 124 Chapter Three Stoichiometry 116 Consider...

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---------------- -- -- .--- 124 Chapter Three Stoichiometry If a container were to have 10molecules of O 2 and 10molecules of NH3 initially, how many total molecules (reactants plus prod- ucts) would be present in the container after this reaction goes to completion? 109. Ammonia is produced from the reaction of nitrogen and hydro- gen according to the following balanced equation: Nig) + 3Hig) ~ 2NH 3 (g) a. What is the maximum mass of ammonia that can be produced from a mixture of 1.00 X 10 3 g N2 and 5.00 X 10 2 g H2? b. What mass ofwhich starting material would remain unreacted? 110. Consider the following unbalanced equation: Ca3(P04Ms) + H 2 S0 4 (aq) ~ CaS0 4 (s) + H 3 P0 4 (aq) What masses of calcium sulfate and phosphoric acid can be pro- duced from the reaction of 1.0 kg calcium phosphate with 1.0 kg concentrated sulfuric acid (98% H 2 S0 4 by mass)? 111. Hydrogen cyanide is produced industrially from the reaction of gaseous ammonia, oxygen, and methane: 2NH 3 (g) + 30 2 (g) + 2CH 4 (g) ~ 2HCN(g) + 6H 2 0(g) If 5.00 X 10 3 kg each ofNH 3 , O 2 ,and CH 4 are reacted, what mass of HCN and of H 2 0 will be produced, assuming 100% yield? 112. Acrylonitrile (C3H3N) is the starting material for many synthetic carpets and fabrics. It is produced by the following reaction.
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