Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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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…
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…
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- A person weighed 15 pennies on a balance and recorded the following masses: 3.112 g 3.109 g 3.059 g 2.467 g 3.079 g 2.518 g 3.129 g 2.545 g 3.050 g 3.053 g 3.054 g 3.072 g 3.081 g 3.131 g 3.064 g Curious about the results, he looked at the dates on each penny. Two of the light pennies were minted in 1983 and one in 1982. The dates on the 12 heavier pennies ranged from 1970 to 1982. Two of the 12 heavier pennies were minted in 1982. a. Do you think the Bureau of the Mint changed the way it made pennies? Explain. b. The person calculated the average mass of the 12 heavy pennies. He expressed this average as 3.0828 g 0.0482 g. What is wrong with the numbers in this result, and how should the value be expressed?arrow_forwardA 15.5 g sample of sodium carbonate is added to a solution of acetic acid weighing 19.7 g. The two substances react, releasing carbon dioxide gas to the atmosphere. After reaction, the contents of the reaction vessel weigh 28.7 g. What is the mass of carbon dioxide given off during the reaction?arrow_forwardSome bottles of colorless liquids were being labeled when the technicians accidentally mixed them up and lost track of their contents. A 15.0-mL sample withdrawn from one bottle weighed 22.3 g. The technicians knew that the liquid was either acetone, benzene, chloroform, or carbon tetrachloride (which have densities of 0.792 g/cm3, 0.899 g/cm3, 1.489 g/cm3, and 1.595 g/cm3, respectively). What was the identity of the liquid?arrow_forward
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- 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…arrow_forwardWhile using an electronic balance the mass of calcium chloride and a watch glass to be 34.920 g total. If the mass of the empty watch glass was found to be 32.17g utilizing a different less accurate balar mass of the transferred calcium chloride to the correct number of significant figures. O 2.75 grams O 3 grams O 2.7500 grams O 2.750 grams O 2.75000 gramsarrow_forwardA student is measuring a sample of sodium bicarbonate on an electronic balance that measures to the thousandth of a gram. The balance displays 23.050 g for the mass of the sample. Which choices will be an appropriate way to record this mass on a laboratory report? 23.050 g 23.0500 g 23.05 g 23 g 23.1 garrow_forward
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