CHEM 1110 Midterm: Chemistry 1110 2006 Spring Test 2
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Instructions: you have 75 minutes to complete this 100-point exam. No programmable calculators allowed: solubility (10 pts): indicate whether the following compounds are soluble in water, na3po4. Writing and balancing equations: (15 pts) write the balanced molecular, total ionic and net ionic equations for the reaction of lead (ii) nitrate with potassium bromide. (make sure you identify the solid precipitate) 5h2o are in 15. 0 ml of the solution? (use the mm from part a: (10 pts) propylene glycol (ch3chohch2oh ) is used as a safe alternative to ethylene glycol, the main ingredient in antifreeze. How many molecules of propylene glycol are in 5. 0 mg of. Ch3chohch2oh? (mm of ch3chohch2oh = 76. 09 g/mol: (15 pts) silicone bracelets have become extremely popular in the last two years. The basic molecular unit of these bracelets is dimethylsiloxane (ch3)2si(oh)2. This is made by reacting dimethyl dichlorosilane, (ch3)2sicl2, with water.
