CHEM 1500 Study Guide - Final Guide: Avogadro Constant, Chemical Equation, Sodium Chloride
10 Feb 2019
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Cell phones must be turned off and out of reach. The periodic table and the avogadro constant are provided on the last page; you can detach the last page and use for your reference. Sc/chem 1500 sample final examination: predict in each case whether a reaction is likely to occur and, if so, write a balanced chemical equation. Be sure to indicate whether the product(s) will be solid (s), liquid (l) or aqueous (aq). 5: a hydrochloric acid solution contains 28. 0% hcl by mass. 2 al(s) + 6 hcl(aq) 2 alcl3(aq) + 3 h2(g) 3: what mass of na2so4 10h2o is needed to prepare a solution of na2so4(aq) containing 1. 5 1020 anions? (be sure to indicate the appropriate number of significant figures in the final answer. ) C4h8o2: an organic compound has a molecular mass of ~88 u and a mass percent composition of 54. 55% c, 9. 09% h and 36. 36% o.
