Lab Flow Quiz - Conversion Factors and Problem Solving

Conversion Factors and Problem Solving 1) Fill in or choose the best answer to complete the table of units. - Millimeter (mL): Volume - Kilogram (kg): Mass - Centimeter (cm): Length 2) Determine the relative order of the metric prefixes of kilo-, micro-, centi-, and milli-. For the same base unit, micro[10^-6] is less than milli[10^-3], which is less than centi[10^-2], which is less than kilo[10^3]. 3) Complete the following table by filling in the blanks. 4) To convert between units, you need to know the relationship between units. For example, one mile equals 5280 feet. This relationship can now be used as a conversion factor, set up as required by the question. For each conversion, choose the correct arrangement of the conversion factor and complete the calculation. Part 1: Convert 7860 feet to miles ❖ A= 1 mile & B=5280 feet Part 2: Convert 0.565 miles to feet ❖ C= 5280 feet & D= 1 mile 5) A football field is 120 yards by 53.333 yards. What is the area of the football field in acres if 1 acre=43560 ft2? Use correct significant figures when answering this question. - First, 120 yds to ft by using 1 yd = 3 ft. This will get you 360 ft. - Second, convert the other measured side into ft by using 1 yd = 3 ft. This will get you 159.9999 ft. - Then calculate the area of the field in square feet: 360 ft x 159.9999 ft. This will get you 57596.4 ft^2. - Finally, convert area in square feet to acres with the conversion factor 1 acre= 43560 ft^2. The answer should be 1.3 acres. 6) When performing a multiplication or division calculation, significant figures in the calculated result are dictated by the significant figures of the measured numbers. The calculated result should have the same number of significant figures as the measured number in the calculation with the fewest significant figures. 7) Perform the calculation, rounding your answer to the proper number of significant figures. 0.381 + 5.28 + 15.0007 = 20.66 8) Perform the calculation, rounding your answer to the proper number of significant figures. 2.74 – 0.00072 = 2.74 9) Perform the calculation, rounding your answer to the proper number of significant figures. 0.517 x 5.28 x 3.7 = 10 10) Perform the calculation, rounding your answer to the proper number of significant figures. 0.32610 ÷ 1.830 = 0.1782 11) Determine the number of significant figures in each measurement. Then, choose the representation of the number where x is in place of the estimated digit from the measurement. - 14.8: 3 SFs & 14. X (Estimated digit) - 10.25: 4 SFs & 10.2 X (Estimated digit) - 0.05 : 1 SFs & 0.0 X (Estimated digit) - 1.000: 4 SFs & 1.00 X (Estimated digit) - 6200: 2 SFs & 6x00 (Estimated digit) - 403: 3 SFs & 40x (Estimated digit) 12) Calculate the volume, in cubic centimeters, of a box which is 125 cm long, 37 cm wide, and 68 cm high. Report the answer with correct significant figures in cubic centimeters. A: Use length x width x height which should allow you to multiply and get 310000. 13) How many kilometers is 3464.7 cm? A: 0.034647 14) Knowing that one day is 24 hours, how many days is 68.8 hours? A: 68.8 hrs x 1 day/24 hrs = 2.87 days 15) How many liters is 91.4 mL? A: 91.4 mL x 1 x 10^-3 L/1mL= 0.0914 L