Chapter 1, Problem 1.59E

"If lemons cost $2.49 per pound and Alice makes $32.00 per hour, how many hours must Alice work to purchase 428 pounds of lemons for a local fair?"

The volume of water used for crop irrigation is measured in acre-feet, where 1 acre-foot is the amount of water needed to cover 1 acre of land to a depth of 1 ft.(a) If there are 640 acres per square mile, how many cubic feet of water are in 1 acre-foot?(b) How many acre-feet are in Lake Erie (total volume = 116 mi3)?

The distance between two cities is 1500 kmkm. How long will it take, in hours, to drive from one city to the other if your average speed is 55 mi/hmi/h? Express your answer to two significant figures and include the appropriate units.

According to the National Heart, Lung, and Blood Institute, LDL-cholesterol levels of less than 130 mg ofLDL-cholesterol per deciliter of blood are desirable for heart health in humans. If, on average, a human has4.7 L of whole blood, what is the maximum number of grams of LDL-cholesterol that a human shouldhave?

an oral suspension of the antibiotic amoxicillin has a density of 1.72g/cm^3. What is the volume, in cubic inches (in^3), of 0.50Lb of the oral suspension.

A car travels at 55 mi/hmi/h and gets 12 km/Lkm/L of gasoline.   How many gallons of gasoline are needed for a 3.0-hour trip?   Express your answer to two significant figures.

A medical doctor gives the order to administer dopamine at a rate of 3.0 mcg/kg⋅min (mcg is the abbreviation for microgram (µg) in a medical context). The dopamine is supplied as a mixture of 400.0 mg dopamine in 250.0 mL of a dopamine solution. The patient weighs 73 kg. What is the infusion rate of the dopamine into her body (in units of mL/hour)?

You are assigned the task of separating a desired granular materialwith a density of 3.62 g/cm3 from an undesired granularmaterial that has a density of 2.04 g/cm3. You want to dothis by shaking the mixture in a liquid in which the heaviermaterial will fall to the bottom and the lighter material willfloat. A solid will float on any liquid that is more dense. Usingan Internet-based source or a handbook of chemistry, findthe densities of the following substances: carbon tetrachloride,hexane, benzene, and diiodomethane. Which of theseliquids will serve your purpose, assuming no chemical interactiontakes place between the liquid and the solids?

How many minutes would it take to go 10.2 km at a speed of 7.65 mi/hr ?