Question

4. The gas tank of a certain luxury automobile holds 22.3 gallons according to the owner’s manual. If the density of gasoline is 0.8206 g/mL, determine the mass in pounds of the fuel in a full tank. 1000 mL = 1 L and 454 g = 1 pound, 3.785 L = 1 gallon.

5. Convert the boiling temperature of gold, 2966 °C, into degrees Fahrenheit.

6. A patient receives an IV of 20,000. units of heparin in a 100.0 mL bag over 45.0 minutes. If the pump is calibrated to 15.0 drops/mL, what is the drops per minute rate?

7. In a recent Grand Prix, the winner completed the race with an average speed of 229.8 km/hour. What was his speed in miles per second? 1.61 km = 1 mile.

8. An electric vehicle is rated as 34.0 kilowatt-hours per 100 miles with the cost of electricity at 12.0 cents per kilowatt-hour. A conventional gasoline engine is rated at 35.0 miles per gallon with a cost of $3.18 per gallon. Calculate the cost in cents per mile for each vehicle.

9. The estimated volume of the oceans is 330,000,000 miles3, convert to cubic kilometers, 1.61 km = 1 mile.

10. The mercury content of a stream was believed to be above the minimum considered safe, 1.00 part per billion (ppb) by weight. An analysis indicated that the concentration was 0.68 parts per billion. What quantity of mercury in grams was present in 15.0 L of the water, the density of which is 0.998 g/mL? 1 ppb Hg = 1 ng Hg/1 g water and 1x109 ng = 1 g.

Answer 1