Take Home Quiz _1 KEY

Take Home Quiz _1 KEY - CHM 114A/C KEY Take-Home Quiz #1 1....

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CHM 114A/C KEY Take-Home Quiz #1 1. (2 pts) Gasoline, primarily a mixture of hydrocarbons, has a density of 0.840 g/cm 3 . What is the density of gasoline in pounds per gallon (lb/gal)? Show work. 7.01 lb/gal 3 3 0.840 1 1 1000 3.785 7.01 / 453.59 1 1 1 gl bc m m L L lb gal cm g mL L gal ⎛⎞ = ⎜⎟ ⎝⎠ 2. (1 pt) Draw a molecular-level representation for a mixture of a molecular compound and a diatomic element in the gas phase. Must have at least one molecular comound (like H 2 O or CO 2 ) and at least one diatomic element (like H 2 or N 2 ). No need for labeling. 3. (3 pts) Complete the table for each compound. Classify each compound as molecular or ionic. Formula IUPAC Name Type of Compound Al(NO 2 ) 3 aluminum nitrite Ionic compound Cr 2 O 3 chromium (III) oxide Ionic compound NO 2 nitrogen dioxide Molecular compound 4. (2 pts) Potassium metal reacts with chlorine gas to form a compound in a combination reaction. Show work.
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