Overview
Week 1 Assignment – Part A
Practice with significant figures: 1. How many significant digits are in 43,000? 2. How many significant digits are in 3000.00? 3. How many significant digits are in 0.00032050? 4. How many significant digits are in 900? 5. How many significant digits are in 8.1100? 6. How many significant digits are in 0.00248? Write these numbers in scientific notation: 7. 72,000 8. 89.0010 9. 580,000,000 10. 0.00000002200 11. 70,000 12. 0.0106 13. What metric units are volume, mass and length measured in? Round the following numbers to 3 sig figs: 14. 655,412,673 15. 93,080 16. 0.080029 17. 0.006498 18. 829.12 19. 92.2322 Perform the following calculation, being sure to maintain the appropriate number of significant figures. 20. 24.5938 + 1.7 = 21. 619.4 - 42.1893 = 22. 539 x 7.2 = 23. 211.62 / 38.4 =
Week 1 Assignment – Part B Identify the metric base unit for the following: 1. Length ____________ 2. Volume ____________ 3. Mass ____________ Give the metric prefix for the following parts of the base units: 4. 0.001 ___________________ 5. 0.000001 ________________ 6. 0.01 ________________ 7. 1000 ________________ Write the correct abbreviation for each of the following units: 8. kilogram ______ 9. meter ______ 10. liter ______ 11. milligram ______ 12. millimeter ______ 13. centimeter ______ 14. gram ______ 15. microgram ______ Which is larger? Circle the correct answer: 16. milligram or kilogram 17. centimeter or millimeter 18. milliliter or liter Convert the following as indicated: 19. 4500 mL = __________ L 20. 500 mg = ____________ g 21. 0.04 L = _____________mL 22. 800 mL = _____________ L 23. 2 kg = _______________g 24. 2.5 g = __________ mg 25. 40.5 cm = _________ mm 26. 3 mg = ___________ mcg 27. 1.2 g = ___________ mg 28. 1.5 L = ____________mL The standard metric unit of volume, the liter, is equal to how many cm3? 29. _______________cm3
Week 1 Assignment – Part C Customary Household Measurements Unit Abbreviation Equivalents drops gtts 1 t = 60 gtts teaspoon t - tablespoon T 1 T = 3 t ounce (fluid) fl oz 1 fl oz = 2 T cup cup 1 cup = 8 fl oz pint pt 1 pt = 2 cups = 16 fl oz quart qt 1 qt = 2 pt = 4 cups = 32 fl oz ounce (weight) oz 16oz = 1 lb pound lb - inches in 12 in = 1 ft feet ft - yard yd 1 yd = 3 ft = 36 in inches in 12 in = 1 ft feet ft - yard yd 1 yd = 3 ft = 36 in Approximate Equivalents 1 t = 5 mL = 60 gtts 1 T = 3 t = 15 mL = ½ fl oz 1 fl oz = 30 mL = 6 t 1 L = 1 qt = 32 fl oz = 2 pt = 4 cups 1 pt = 16 fl oz = 2 cups 1 cup = 8 fl oz = 240 mL 1 kg = 2.2 lb 1 in = 2.5 = cm Complete the following equivalencies: 1. 1 kg = __________ lb 2. 1 in = ____________ cm 3. 1 fl oz = _________ mL 4. 1 cup = ___________mL 5. 30 g = _________ mg 6. 6.5 in = _________cm 7. 0.75 mL = ________L 8. 5 fl oz = _________mL 9. 60 mL = _________T 10. 80 kg = _________lb Answer the following questions: 11. The doctor prescribed 30 mL of a medication per dose for a patient. How many tablespoons should Sam tell the patient to take per dose? _______T 12. A patient received stitches for a laceration that was 5 inches long. Sam needs to record the length in centimeters in his chart. The wound is __________ cm long. For questions 13 – 16, use the following question prompt: Sam gave the mother of the sick child a 16 oz bottle of liquid medication and told her the child should take 30 mL twice a day. 13. How many tablespoons is one dose? ________ 14. How many total mL will the child take in one day? ______ 15. How many ounces is this? _______ 16. How many days will the bottle of medication last? _________
Week 1 Assignment – Part d 1. An unknown substance has a mass of 56.8 g and a volume of 23.4 mL. What is the density of this unknown substance? 2. The densities of the coinage metals (copper, silver and gold) are as follows: copper = 8.95 g/cm3 silver = 12.59 g/cm3 gold = 19.32 g/cm3 A sample of material is found to weigh 15.12 grams and have a volume of 1.20 cm3. The sample is most likely which of the coinage metals listed above? a. copper b. silver c. gold 3. You measure a cube and determine that its sides are 0.65m. You place the cube on a mass scale and determine that this cube has a mass of 10,500 grams. What is the density of this cube in units of kg/m3 and in units of g/mL? 4. Mercury is the only metal which is a liquid at room temperature. The density of mercury is 13.6 g/cm3. What is the mass, in pounds, of 1.00 quart of mercury? [1 liter = 1.057 quart; 1 pound = 453.6 grams] 5. Aluminum has a density of 2.70 g/ cm3. What volume is occupied by a block of aluminum which weighs 4.32 kg? 6. Iron has a density of 7.874 g/cm3. What is the mass of a rectangular block of iron with dimensions of 3.000 cm by 4.000 cm by 5.000 cm?