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Chem 121 In-class assignment #5 Names _________________________________________________________________ Oxidation – Reduction (Redox) Reactions Balance each Redox reaction below, and then write the oxidation equation and the reduction equation. 1. ____ Al2O3(s) ____Al (s) + ____O2 Oxidation equation: Reduction equation: 2. ____ Ba(s) + _____AgNO3 ____Ag (s) + ____Ba(NO3)2 Oxidation equation: Reduction equation: Mole Conversions 1. Write the following in terms of moles: (a) 6.02 * 1023 donuts (b) 35 * 1024 nitrogen atoms (c) 36.0 g C (d) 19.5 g K (e) 54.0 g H2O (f) The number of moles of Cl and 5.0 moles of MgCl2 2. Write the following in terms of grams: (a) 6.0 moles arsenic, As (b) 4.0 moles calcium carbonate, CaCO3 (c) 12.04 * 1023 calcium, Ca, atoms Moles in Chemical Reactions Nitrogen gas reacts with hydrogen gas to produce ammonia by the following equation: ____N2(g) + ____H2(g) ____NH3(g) 1. Fill in the coefficients necessary to balance the above reaction. 2. Write the 3 mol:mol factors for this reaction: 3. If you have 1.50 moles of H2, how many grams of NH3 can be produced? 4. How many grams of H2 are needed to react with 3.00 g N2? 5. How many grams of NH3 can be produced from 15.0 g H2?