Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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Students have asked these similar questions
1. Describe how to use conversion factors correctly using an example.
2. Write a number between 1.000 and 9999999.99. Write the number of significant figures in your number.
3. Give an example of how to find significant figures in calculations for
A addition or subtraction
B. multiplication and division
Do the following calculations to the correct number of significant figures:
a.) 453/2.031
b.) 432/7.3-28.523
c.) 5.01 x 105/ 7.8 x 102
d.) 1459.3 + 9.77/ 4.32
a. When
12.12 and
86.8 are added, the answer should be based on
Enter the answer with the correct number of digits.
12.12 + 86.8=
b. When
75.91 is divided by
54.2, the answer should be based on
Enter the answer with the correct number of digits.
75.91 + 54.2 =
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- Consider multiplying “26.2” by “16.43.” What would a mathematician say the answer is? What would a scientist say? Justify the scientist’s answer, not merely citing the rule, hut explaining it.arrow_forwardConsider the addition of “1 5.4” to “28.” What would a mathematician say the answer is? What would a scientist say? justify the scientist’s answer, not merely citing the rule, but explaining it.arrow_forwardComplete the following using significant digits rules. Report your answers using the correct number of significant digits. A.) 0.368 + 12.24 - 6.742 B.) (30.86) x (15.667) x (0.28) C.) (1600 ÷ 2.24) + 1.185 D.) (1260 + 42.35) ÷ 6arrow_forward
- 1.-How many significant figures are in the following numbers? 0.70620 a. b. 5010 4548 C. d. 0.00045050 7.210 x 105 e. 2.-Round up the following numbers to the designated significant figures to 2 significant figure 32445.34 to 1 significant figure 85518 to 4 significant figures 526544 3.-Express each answer in scientific notation and with the proper number of significant figures a. 1,027611 +363.06 = b. 217 903 118.7 2-35.5 C. d. 28 x 47.3= e. (5.2 x 10) x (3.33 x 102) 4.-Convert the following numbers to scientific notation, use prefixes and use only 2 significant figures Example 52,000,000 g 52 X 10 g 52Mg 52 megagrams 0.0000003 g a. b 26198151 L 1546 m C. 5.-What does the slope of each line on the graph tell you? 6.-Which runner finish the race first red, blue or green? TIME (seconds) b) 4x+2-2(x+6) 7.-Solve for X in the following equations: a) 25 554x-4.245 8.-Classify each statement as a law, a theory, an experiment, a hypothesis, an observation Birds evolved from dinosaurs. 1. Hot…arrow_forwardCalculate the correct number of the significant figures: a.) 1459.3 + 9.77 / 4.32 b.) 0.004 + 0.09879 c.) 2.4 - 1.777 d.) 0.00456 / 1.0936arrow_forwardNo need to explain. Just give the answers directly. Thank you. 1. If your final answer is 4.5023485 grams, what will you input as your final answer? 2. Round off 0.274 to two (2) significant figures 3. Round off 20.0847 to two (2) significant figuresarrow_forward
- Do the following calculations to the correct number of significant figures: a.) 3.8 x 105-8.45 x 104 b.) 0.004 + 0.09879 c.) 1459.3 + 9.77/ 4.32 d.) 432/7.3-28.523arrow_forwardDo 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 102arrow_forwardPerform the following calculation. Round your answer according to the correct number of significant figures: Write your final answer on the blank... (4.769z107)+(1.76x102) (8.65210)arrow_forward
- A. Type the number 1340000 in scientific notation. B. Type the number 0.000354 in scientific notation. C. Type the number 3.14×103 in standard notation.arrow_forwardsignificant figures and units. 3. Perform the following calculations and report the answer with the correct number of A. (9.2030 g)(0.00230 g) + 0.1020 g² = 00²0211237 0.10205² 0.123292 B. 234.020 g- 184.08 g 382.402 mL-326.322 mL (1 fl oz = 29.6 mL) 4. An aluminum beverage can contains 12.0 fluid ounces of liquid. Express this volume in liters. 12. uffaz X 560 080ML 49.949 = 0.8905g/mL CHE 1011 29.6mL = 355.2 mL Ift:0² (1 in = 2.54 cm) 5. What is the volume, in cubic centimeters, of a brick that is 4.0 in x 2.7 in × 8.0 in? 4.0A x 2,54 cm = 10.16cm liAcc 207 + x 2.54cm = 60858cm هذا 8.0MAX 2.54cm ITA 20032cm So volume 20.32cm x 6.858cm x 200320 1415.84 cm³ 6. The S.I. unit of energy is the joule, J (1 J = 1 kgom²/s²). Another energy unit, the erg, was once in widespread use (1 erg = 1 gocm²/s²). Calculate the number of ergs in 1.0 J. Page 2 of 2arrow_forwardNo need to explain. Just give the answers directly. Thank you. 1. Round off 1.274 to one (1) significant figure 2. Round off 1653 to one (1) significant figure 3. Round off 534.5 to three (3) significant figuresarrow_forward
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