Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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Calculate all values of X to the correct significant figures.a. X = 0.00076000 /40.3b. X = 80.3 + 12.44 – 5.6c. X = (0.61026)(2.00020)(1400)d. X = (2.98 X 10-2) X 3.777e. X = (5.670 – 3.0098)/2.13
Carry out the following calculation and select the answer with the correct number of significant figures:
(29.3 - 20.3) / 3.00
Group of answer choices
3.0
3.00
9.00
9.0
Perform the following calculations, and report numbers with correct significant figures:
(6.626 x 1023) (3.00 x 108) ÷(4.5 x 10-7)A) 4.417 x 1038
B) 4.42 x 1038
C) 4.41 x 1038
D) 4.4 x 1038
E) None of the above
Group of answer choices
A
B
C
D
E
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- When a large or small number is written in standard scientific notation, the number is expressed as the product of a number between 1 and 10, multiplied by the appropriate power of 10. For each of the following numbers, indicate what power of 10 would be appropriate when expressing the numbers in standard scientific notation. a. 84,961,306 b. 0.4870 c. 0.000033812 d. 3,890,406,000,000arrow_forwardThe number of people present at an outdoor rock concert was estimated by police to be 40,000. What is the high and low estimate for the number of people present at the concert if it is assumed that this estimate has each of the following uncertainties? a. 10,000 b. 1000 c. 100 d. 10arrow_forwardPerform the following calculations: a) 14.86 ml + 15.0 ml + 14.980 ml = b) (42.927 g/ml)(9.00 ml) = Round off the answers to the proper significant figures.arrow_forward
- Type the number 8.75 x 10-4 in standard notation. Express your answer using standard notation.arrow_forwardA student found an object to weigh 163.46g. The “true” weight was known to be 163.24g. Calculate the accuracy (in ppt) of the student’s measurement.arrow_forwardWhat is the result of the following calculation to the correctnumber of significant figures?(6.266 − 6.261) ÷ 522.0 = a) 9.5785 × 10–6b) 9.579 × 10–6c) 9.58 × 10–6d) 9.6 × 10–6e) 1 × 10–5arrow_forward
- what is the sum of the measured values 539, 35.4, 0.90, and 9.0 ?arrow_forwardEvaluate to the appropriate number of significant figures and express in scientific notation:(4.791 x 109 - 3.291 x 1012) / (7.120 x 10-5 + 7.120 x 10-8 + 7.120 x 10-11)arrow_forwardConvert the following values and write answers in scientific notation, where appropriate. 6.8 Ibs so kgarrow_forward
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