AP* Chemistry: The Central Science (NASTA Edition)
AP* Chemistry: The Central Science (NASTA Edition)
14th Edition
ISBN: 9780134650951
Author: Brown and Lemay
Publisher: PEARSON
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Heparin is available in a 10 mL vial containing 2500 units/mL.  A heparin infusion is prepared by adding 7.5 mL of the heparin stock solution to a final volume of 500 mL of Dextrose 5% in Water. What is the infusion rate (mL/hour) required to deliver a dose of 18 units/kg/hour to a patient who is 6’0” tall and weighs 154 lbs?
In the United States, water used for irrigation is measuredin acre-feet. An acre-foot of water covers an acre to a depthof exactly 1 ft. An acre is 4840 yd2. An acre-foot is enoughwater to supply two typical households for 1.00 yr. (a) If desalinatedwater costs $1950 per acre-foot, how much doesdesalinated water cost per liter? (b) How much would it costone household per day if it were the only source of water?
Electrical energy is measured in kilowatt hours, kWH. A watt is 1 joule per second, a kilowatt is 1000 joules per second. An hour has 3600 seconds, therefore 1kWh=3.6x10^6 joules. How many kWh are there in a meal that is 437 Cal?
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