(a) Interpretation: The average number of people entering the store per for the 5- day period is to be calculated. Concept introduction: Scientific notation is used to write large numbers by shifting the decimal point. It is expressed as the product of a decimal term and the power of 10 . Significant figures are used to express a measurement into a correct number in scientific notation. The significant figures reflect the closeness of measured values to the standard values.
(a) Interpretation: The average number of people entering the store per for the 5- day period is to be calculated. Concept introduction: Scientific notation is used to write large numbers by shifting the decimal point. It is expressed as the product of a decimal term and the power of 10 . Significant figures are used to express a measurement into a correct number in scientific notation. The significant figures reflect the closeness of measured values to the standard values.
Solution Summary: The author explains how scientific notation is used to write large numbers by shifting the decimal point and the power of 10.
The average number of people entering the store per for the 5- day period is to be calculated.
Concept introduction:
Scientific notation is used to write large numbers by shifting the decimal point. It is expressed as the product of a decimal term and the power of 10. Significant figures are used to express a measurement into a correct number in scientific notation. The significant figures reflect the closeness of measured values to the standard values.
Interpretation Introduction
(b)
Interpretation:
The average height of the starting five members of a women’s basketball team is to be calculated.
Concept introduction:
Scientific notation is used to write large numbers by shifting the decimal point. It is expressed as the product of a decimal term and the power of 10. Significant figures are used to express a measurement into a correct number in scientific notation. The significant figures reflect the closeness of measured values to the standard values.
part A: Sort the following numbers according to whether they should be rounded up or down when rounding to the nearest tenth (the first digit after the decimal).
3.1760, 4.319, 19.47, 5.82, 66.9214, 8878.2010, 7.084, 124.76
part B: Drag the answers that have been correctly rounded to the appropriate number of significant figures to their place in the table. To avoid rounding errors, start with the unrounded value before conducting each manipulation.
Drag the appropriate labels to their respective targets.
View Available Hint(s)for Part B
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14.93
Group 3 14.93
12
Group 1 12
14.92
Group 3 14.92
3.62
Group 4 3.62
14
Group 3 14
3.7
Group 4 3.7
15
Group 3 15
3.6
Group 4 3.6
15.0
Group 3 15.0
3.63
Group 4 3.63
14.9
Group 3 14.9
3.623
Group 4 3.623
12.47
Group 1 12.47
7.97
Group 2 7.97
12.46
Group 1 12.46
7.966
Group 2 7.966
12.4
Group 1 12.4
7.0
Group 2 7.0
13
Group 1 13
7.96
Group 2 7.96
12.5
Group 1 12.5
8.0
Group 2 8.0
3.622
Group 1…
Measurement and Matter
Adding or subtracting and multiplying or dividing measurements
1/3
B
A chemistry student must write down in her lab notebook the concentration of a solution of sodium hydroxide. The concentration of a solution equals the mass
of what's dissolved divided by the total volume of the solution.
Here's how the student prepared the solution:
The label on the graduated cylinder says:
empty weight: 7.2 g
. She put some solid sodium hydroxide into the graduated cylinder and weighed it. With the sodium hydroxide added, the cylinder weighed 63.517 g.
. She added water to the graduated cylinder and dissolved the sodium hydroxide completely. Then she read the total volume of the solution from the
markings on the graduated cylinder. The total volume of the solution was 91.0 mL.
What concentration should the student write down in her lab notebook? Be sure your answer has the correct number of significant digits.
g-mL
G
How many mL of (5.0300x10^0) M NANO3 would be needed in a dilution experiment to make
(8.56x10^2) mL of (2.3400x10^0) M NANO3?
Enter your answer in scientific notation with 3 sig figs. Do not include any units in your
answer.
Do not round any intermediate calculations.
Note: Your answer is assumed to be reduced to the highest power possible.
Your Answer:
x10
Answer
Chapter 1 Solutions
Chemistry for Today: General, Organic, and Biochemistry
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