Molar Mass and Mass-to-Mole Conversions
(a) (5 points) What is the molar mass of 2-pentene if 6.69 × 10
16 molecules of 2-pentene weigh 7.23 ?g?
(b) (5 points) A single tablet of Sudafed cold medication
contains 60 mg of ephedrine (C10 H15 NO). How many ephedrine
molecules are contained in a single tablet?
c. Balancing Equations and Classifying Reactions
In the spaces provided balance the following reactions. Also
indicate the type of reaction (Combination, Decomposition,
Combustion, Double displacement or Single displacement).
Balanced Reaction
Type of
Reaction
a) ___ Cs + ___ H2 O ? ___ CsOH + ___ H 2
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b) ___ F 2 + ___ NaBr ? ___ NaF + ___ Br 2
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c) ___ Al2 O 3 ? ___ Al + ___ O 2
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d) ___ Ca(OH)2 + ___ HClO 2 ? ___ Ca(ClO2 )2 + ___H2 O
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e) ___ C7H16 + ___ O2 ? ___ CO2 + ___ H2 O
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