Practice exam 1

Practice exam 1 - Chem 101 Exam 1 N ame:_ Please put each...

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Chem 101 Exam 1 Name:_____________________________________ Please put each of your answers on the front cover to make it easier for grading. I will also check in the test booklet for problems that require calculations. If the answer is wrong, partial credit will be given whenever possible. All questions are worth the same amount. You must have calculations present within the test to get credit for an answer even if the answer is correct . 1 a. substance Group of identical molecules Boiling point gas at room temperature, etc. 2 2700 kg/m 3 2.70x10 3 kg/m 3 3 3 A material that does not break up into ions. sugar a. the light bulb would not light at all 4 Potassium sulfate +1 Sulfate ion SO 4 2- 5 2NaHCO 3 Na 2 CO 3 + H 2 O + CO 2 78.3g 89.8% 6 2NaOH + H 2 SO 4 Na 2 SO 4 (aq) + 2H 2 O 0.0522M 5.228 x 10 -3 moles 7 15 15 16 8 3.37 x 10 26 atoms 28.0g 46.7%
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Constants Conversions Equations Equations n = 6.02 x 10 23 /mol T (K) = t (0ºC) + 273.15 d = m / V RT = 2/3 . N
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Practice exam 1 - Chem 101 Exam 1 N ame:_ Please put each...

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