Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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Complete 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) ÷ 6
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.) 3.8 x 105-8.45 x 104
b.) 0.004 + 0.09879
c.) 1459.3 + 9.77/ 4.32
d.) 432/7.3-28.523
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- Consider 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_forward1.65 An industrial engineer is designing a process to manufacture bullets. The mass of each bullet must be within 0.2 5% of 150 grains. What range of bullet masses, in mg, will meet this tolerance? 1 grain = 64.79891 mg.arrow_forwardAt sea, distances are measured in nautical miles and speeds are expressed in knots. 1 nautical mile =6076.12ft 1 knot =1 nautical mi/h (exactly) (a) How many miles are in one nautical mile? (b) How many meters are in one nautical mile? (c) A ship is traveling at a rate of 22 knots. Express the ship's speed in miles per hour.arrow_forward
- 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?arrow_forwardA. 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_forwardDo 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/ 4.32arrow_forward
- No 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_forward1.-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_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_forward
- Calculate 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_forwardSection 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. %3Darrow_forwarda. 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 =arrow_forward
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