# 4dDateLaboratory InstructorteeBasic Laboratory TechniquesPre-labQuestionsSoYou should be able to answer the following questions before beginning this experiment.What are the basic units of length, mass, volume, and temperature in the SI system?1..IT. T2. What decimal power do the following abbreviations represent: (a) M, (b) k, (c) m, (d) n, and (e) u?3. What is the number of significant figures in each of the following measured quantities: (a) 351 g,(b) 0.0100 mL, (c) 1.010 mL, and (d) 3.72x10cm?TE :What is the length in millimeters of a crystal of copper sulfate that is 0.180 in. long?4.-10Perform the following conversions: (a) 72.3 mg to g, (b) 6.0x10m to mm, and (c) 325 mm to um.5.6. DNA is approximately 2.5 nm in length. If an average man is 5 ft 10 in. tall, how many DNA moleculescould be stacked to extend from the ground to the top of the head of an average man?7. A liquid has a volume of 3.70 L. What is its volume in mL? In cm3?Copyright O 2018 Pearson Education, Inc. Basic Laboratory TechniquesWhy should you never determine the mass of a hot object?8.Why is it necessary to calibrate a thermometer and volumetric glassware?9.2pindooaedsdal-iteWhat is precision?10.da sd bleode softos elds ginld0p gaiwolloWhat is the density of an object with a mass of 1.583 g and a volume of 0.2009 mL?11.object three times gave the following results: 9.2 g, 9.1 g, and 9.3 g. Find theDetermining the mass of anmean mass and the average deviation from the mean.12.sdt oi tedos nt 201Normal body temperature is 37.0 °C. What is the corresponding Fahrenheit temperature?13.14. What is the mass in kilograms of 680 mL of a substance that has a density of 0.930 g/mL?15. An object has a mass of exactly 5 g on an analytical balance that has an accuracy of 0.1 mg. To howmany significant figures should this mass be recorded?

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