TMath 100 Summer 2012 Exam 1 Name: ___________________________________ Score: 100 Please show all appropriate work clearly and write all explanations in complete sentences. You may use a scientific calculator only for all problems. Graphing calculators are not allowed on this exam. You may not use notes or scratch paper. Remember: Partial credit can only be given if some work is shown! The answer to problems involving measurements must be to the correct number of significant digits. Be sure to include the correct units when appropriate. All applications (word problems) must be answered in complete sentences. 1. For each of the following, determine the accuracy and the precision. a) 1.0005 × 104 L ______________ b) 350.2 Kg _____________ _______________ _______________ 2. For each of the following, circle which measurement makes the most sense. a) The mass of a calculator 1.4 g 1.4 kg 140 g 140 mg b) How much water could fit in the cap of a pen 12 L 12 mL 1.2 mL 1.2 L 3. Add the following and give your result in scientific notation. Show all work clearly. 2.4 10 4 7.957 10 3 4. Convert 5.8 × 10−5 mm to kilometers. Show your work using dimensional analysis with conversion factors. 5. A grain of rice has a mass of approximately 25 g. Convert this amount to pounds. Show your work using dimensional analysis with conversion factors. Write your answer in scientific notation if necessary. 6. The doctor orders 125mg of Keflin. It is available as 1 gram per 10mL. How many mL should be injected? Show your work using the dosage formula. Use dimensional analysis for any conversions you make. 7. Solve for a . M ab a 8. You are on your way outside, and you look at the thermometer and see the temperature is 23ᵒ C. Do you take a parka, a sweater, or just walk out the door? Defend your answer. 9. The recommended dose for Ancobon is 12.5 to 37.5mg/kg/day administered every 6 hours. It is available in 250mg capsules. A patient weighs 99 pounds. What is the minimum number of mg that the patient can receive each day? What is the minimum number of capsules that the patient can take per dose?