Question

Date Desk Laboratory Instructor Basic Laboratory Techniques 1 Pre-lab Questions You 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. 2. What decimal power do the following abbreviations represent: (a) M, (b) k, (c) m, (d), and n (e) What is the number of significant figures in each of the following measured quantities: (a) 351 g. 3. (b) 0.0100 mL, (c) 1.010 mL, and (d) 3.72x10 cm? What is the length in millimeters of a crystal of copper sulfate that is 0.250 inch long? 4. m to mm, and (c) 325 mm to jm. Perform the following conversions: (a) 72.3 mg to g, (b) 6.0x100 5. 6. DNA is approximately 2.5 nm in length. If an average man is 6 ft tall, how many DNA molecules could be stacked end to end in an average man? 7. A liquid has a volume of 3.70 liters. What is its volume in mL? In cm3? 11

Answer 1

man volume and temprature in Basic unit of length, ma the SI system the unit of length meter (m) mass kilogram (kg) cubic meter (m²) volume Kelvin (K) temprature multiple 2. Sino a. symol M prefix Million kilo بارہ nanolog nano 4 in do micro micro

3.1. Mon - Zero digit are always significant 2. Any Tero between two significant digit are significant. 3. A final pero or trailing zero in the decimal partim only are signiti cant.

signiticant figure 351 0.0100 mm 5 m 1.010 3.72x10 3 length= 0.180 in. linch= 0.0294 m 0.180in. 0.004572m Teryth in (M) - 0.004572 - Im= 1000 milimeta 0.004512= 0.004572 X 1000 = 4.572 mm Answer

wel = 325000 um la ooum ma luir 2001 - ww! ne 1 = wwl wri wer of wichste 66 wol x0.9 = wewe 0001 XM ,-01X0. t- Im = 1000mm Goxloom to mm b) bezco. = Blucool x blue.th 1100.0 = bul bwoool=b1 f of bu ert (o s

height of man= 6ft Itt = 3.048 xlofnm 6 ft = 1.829 x109 om g. snm 1.829xonm length = = 1 stack I x1-829x10 Starr 2.5 = 0.732x10" stack = 7.322107 stack sts wel