Chem 127 Review (Wikholm) 2008 A. 1) Calculate the average mass of a zinc atom in grams. 2223g65.39g Zn1mol Zn=1 Zn atom1.08610gatom1mol Zn6.022x10 atoms−××=×2) Glucose has the formula, C6H12O6. How many carbon atoms are there in 5.0 g of glucose? 23231mol glu6.022x10molecules6 C atoms5.0g glu1.010C atoms180.g glu1mol glu1 molecule×××=×3) What is the mass percent of C in a compound with a formula (C5H5)2Fe? g C120.1 g C%=x100%= 64.57%g cmpd186.0 g cmpdC=B. Ammonia can be prepared from the reaction of hydrogen and nitrogen according to the following equation: N2(g) + 3H2(g) →2NH3(g) 1. If 50.0 grams of N2reacts with an excess of hydrogen, how many moles of ammonia can be produced? 3223222 mol NH1mol N50.0 g N xx3.57 mol NH28.0 g N1 mol N=2. If 20.0 grams of H2reacts with an excess of nitrogen, how many moles of
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