Chapter 1, Problem 1.56E

1.47 A student weighs 10 quarters and finds that their total mass is 56.63 grams. What should she report as the average mass of quarter based on her data?

Section 1.9 Using Units in Calculations 19. You are trading blueberries for cherries. Using an exact relationship of 1 cherry = 4 blueberries, construct a unit factor and determine how many cherries you can get for you can for 37 blueberries. Use significant figures. %3D

1.) There are exactly 2.54 centimeters in 1 inch. When using this conversion factor, how many significant figures are you limited to? A. unlimited number of significant figures B. depends on if you are using it in multiplication/division or addition/subtraction C. ambiguous D. 3 E. 1 2.)A room has dimensions of 10.0 ft × 20.0 ft × 8.00 ft. Given that there are three feet in a yard, what is the volume of the room in yd3? A. 178 B. 1.60 × 103 C. none of the above D. 59.3 E. 533 3.) What is the standard scientific form for the number 0.0002500? A. 2.500 x 104 B. 2.500 x 10-4 C. 2.50 x 10-4 D. 2.5 x 104

Perform the calculation to the correct number of significant figures. (43.998 * 0.00552)/2.002a) 0.121                   b) 0.12                  c) 0.12131                 d) 0.1213

Using the arithmetic problem below, determine the correct number of significant figures. (1.5x10-4x3.0)+2.01 a.) 2.0192 b.) 2.01 c.) 2.019 d.) 2.02 e.) 2.019195

Do the following calculations to the correct number of significant figures: a.) 87.6 + 9.888+2.3+100.77 b.) 43.7-2.341 c.) 89.6 + 98.33-4.674 d.) 6.99-5.772 e.) 3.8 x 10 5-8.45 x 104

A. Rounding Off A.1 Rounding A student rounded off the following calculator displays to three significant figures. Indicate if the rounded number is correct. If it is incorrect, round off the display value properly. Calculator Student's Correct (yes/no). Corrected (if needed) Display Rounded Value 24.4704 24.5 143.63212 144 532 800 530 0.00858345 0.009 8. 8.00 17

3. Provide the answer with the appropriate number of significant figures. a. 6.03 x 650 b. 2.7 x 1031.645 c. 3.000 + 7.61 + 124.2 d. (3.55 x 109) x (9.5 x 10-7) e. 7.845 - 1.20 f. 7.845- 1.2 g. (6.72 x 106 ) - (4.32 x 10“ )

1. A hollow square metal tube has a measurement of 2.42 in for each side and a weight of 53.71 g. The volume of empty space inside the tube was measured to be 0.93 in3. If the density of the metal used in constructing the tube is 11.81 g/mL, calculate the length of the tube in inches. 2. Porosity is a measure of the void or empty spaces in a material and is a fraction of the volume of voids over the total volume. The density of the solid material used to create 6 pieces of 0.99 cm diameter and 1.17 cm height cylindrical beads is determined to be 1.84 g/mL. These beads were then placed in a flask and were filled to the 43 mL mark with a salt solution. The total weight measured of the beads and the salt solution was 47.22 g. Upon further inspection, it was found that manufacturing defects caused the measured porosity of the beads to be at 20%. Assuming that the solution was able to fully fill the empty spaces inside the beads, calculate the density of the salt solution. 3. A chocolate…