Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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2. Do the following calculations and use the correct number of significant figures in your answers. Assume all numbers are the results of measurements.
a. 0.208 + 4.9 + 1.11
b. 228 + 0.999 + 1.02
c. 8.543 − 7.954
d.(3.2 × 10−2) + (5.5 × 10−1) (hint: Write in the decimal form first, then add.)
e. 336.86 − 309.11
f. 21.66 − 0.02387
Do the indicated arithmetic and give the answer to the correct number of significant figures.
I.
II. 0.71 + 92.2
III. 934 × 0.00435 + 107
IV. (847.89 - 847.73) + 14673
Do the following calculations to the correct number of significant figures:
MUST follow the rules of SIGNIFICANT figures
a.) 432/7.3-28.523
b.) 0.004 + 0.09879
c.)87.6 + 9.888 +2.3 + 100.77
d.) 5.01 x 105/7.8 x 102
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- How many significant figures are in each measurement? (a) 3.1416 degrees (b) 0.00314 K (c) 1.0079 s (d) 6.022 1023 particlesarrow_forwardPlease answer all and please do the calculationsarrow_forwarda. Using the correct rules for multiplication/division and significant figures provide the answer for the following calculation. 6.98 x 89.44 = b. Using the correct rules for multiplication/division and significant figures provide the answer for the following calculation. 7831 x 76.987 = c. Using the correct rules for addition/subtraction and significant figures provide the answer for the following calculation. 7831 + 76.987 = d. Using the correct rules for addition/subtraction and significant figures provide the answer for the following calculation. 7831.67 + 76.987 = e. Using the correct rules for addition/subtraction and significant figures provide the answer for the following calculation. 7831.67 + 76.987 =arrow_forward
- part A: Sort the following numbers according to whether they should be rounded up or down when rounding to the nearest tenth (the first digit after the decimal). 3.1760, 4.319, 19.47, 5.82, 66.9214, 8878.2010, 7.084, 124.76 part B: Drag the answers that have been correctly rounded to the appropriate number of significant figures to their place in the table. To avoid rounding errors, start with the unrounded value before conducting each manipulation. Drag the appropriate labels to their respective targets. View Available Hint(s)for Part B Reset Help 14.93 Group 3 14.93 12 Group 1 12 14.92 Group 3 14.92 3.62 Group 4 3.62 14 Group 3 14 3.7 Group 4 3.7 15 Group 3 15 3.6 Group 4 3.6 15.0 Group 3 15.0 3.63 Group 4 3.63 14.9 Group 3 14.9 3.623 Group 4 3.623 12.47 Group 1 12.47 7.97 Group 2 7.97 12.46 Group 1 12.46 7.966 Group 2 7.966 12.4 Group 1 12.4 7.0 Group 2 7.0 13 Group 1 13 7.96 Group 2 7.96 12.5 Group 1 12.5 8.0 Group 2 8.0 3.622 Group 1…arrow_forwardIII. Perform these calculations and express the result with the proper number of significant figures. a. (4.850 g – 2.34 g)/1.3 mL b. (4.66 x 10-3) × 4.666 c. 0.003400/65.2arrow_forwardI think I did a calculation wrong but I am having trouble understanding significant figures. In this problem, I am calculation the density of water from my previous calculations mass= 7.359g and volume=7.8mL. So I then divided 7.359g by 7.8mL to find density and got (.9434615385) on my calculator which I then turned into (.94) because I believe there should be 2 significant figures. Is (.94) correct or should 1.4 be the final answer?arrow_forward
- Do the following multiplication and division calculations. Give a final answer with the correct number of significant figures and the correct units. Units can cancel or multiply just like number factors. (2.5 x 103 m/s) x (5.00 x 10-6 s) = ?arrow_forwardMass (g) Height (cm) Diameter (cm) Cylinder A 15.560 5.11 1.20 Cylinder B 35.536 5.90 1.30 In your calculation use the value 3.14 for π. Write your answer to the correct number of significant figures. Calculate the volume of Cylinder A and B using the dimensions of the cylinder.arrow_forwardHow many significant figures are in the following measurement: 0.00204 g Type your answer... Perform the following calculation. Enter the answer with the correct number of significant figure. 8.934+ 37.1 29 Be sure to start your answer with 0.xxxx, not just a decimal place, if appropriate. Ex. Enter 0.244 and NOT.244 Type your answer... Convert 69. kL to uL. Express your answer in scientific notation without writing units. Ex. 0.00222 is entered as 2.22*10^-3. Type your answer...arrow_forward
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