B.2 Perform the following addition and subtraction calculations. Give a final answer with the correct number of significant figures. 13.7052 13.45 mL + 0.4552 mL 145.5 m + 86.58 m + 1045 m 1315 + 200 + 1100 245.625 g - 80.2 g 4.62 cm – 0.885 cm

B.2 Perform the following addition and subtraction calculations. Give a final answer with the correct number of significant figures. 13.7052 13.45 mL + 0.4552 mL 145.5 m + 86.58 m + 1045 m 1315 + 200 + 1100 245.625 g - 80.2 g 4.62 cm – 0.885 cm

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Round each answer to the correct number of significant figures. 9 +2.8 - 0.135+10.8=22.265 My previous answer was 22.3 it was incorrected.
3.) Perform the following calculations. Express your answers in scientific notation (1 pt each) using the correct number of significant figures. a) (0.000414000) + (7.80 x 10-11) 40 14×1054 7.8 X 10-11 = 0.53 077X10 [5.3077x10 c) (9.612 x 5.00)- 35.20 -4+11 9612x5-35.2 48.06-35.20 $12.95 - (1.286 X10' b) 118 +3020.760 3020.760 + 118.000 13138.760 |scientific No *13138.761 C 7 -0.03906 11 3.906x10
1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to the nearest whole…
1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to the nearest whole…
What is the uncertainty of a measurement using a milligram balance? A) ±1g B) ± 0.1 g C) ± 0.01 g D) ± 0.001 g E) ± 0.0001 g
1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to the nearest whole…
1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to the nearest whole…
Perform the calculations and determine the absolute and percent relative uncertainty. Express each answer with the correct number of significant figures. To avoid rounding errors, do not round your answers until the very end of your calculations. [9.8 (±0.3) — 2.31 (±0.01)] 8.5 (+0.6) = absolute uncertainty: + 0.76 Incorrect percent relative uncertainty: 0.88 + 86.36 Incorrect 9.2 (+0.4) × ([5.4 (±0.3) × 10−³] + [5.6 (±0.1) × 10-³]) = Incorrect %
What is the smallest mass that we can measure on an analytical balance that has a tolerance of ±0.1 mg, if the relative error must be less than 0.1%?
67. Correct any answers that have the incorrect number ofsignificant figures.(a) (78.56 - 9.44) * 45.6 = 3152(b) (8.9 * 105 , 2.348 * 102 ) + 121 = 3.9 * 103 (c) (45.8 , 3.2) - 12.3 = 2(d) (4.5 * 103 - 1.53 * 103 ) , 34.5 = 86
hat is a good practice when leaving an operating equipment unattended? A Record the equipment using a video camera so you can review the observations while you are away B Leave a note that says "I'll be back in a few minutes. Thank you!" Ask another student in the next room to supervise the equipment for you D Provide fail safe provisions with your phone number to contact in case of emergency Francis A. Santos