
(a)
Interpretation:
The given problem needs to be solved in scientific notation and rounded off to the correct number of significant figure.
Concept introduction:
To multiply or divide numbers in scientific notation, multiply or divide the coefficients and then add or subtract the exponents, respectively.

Answer to Problem 126A
Explanation of Solution
Compute the following calculation.
(b)
Interpretation:
The given problem needs to be solved in scientific notation and rounded off to the correct number of significant figure.
Concept introduction:
To multiply or divide numbers in scientific notation, multiply or divide the coefficients and then add or subtract the exponents, respectively.

Answer to Problem 126A
Round off to the correct number is
Explanation of Solution
Compute the following calculation.
(c)
Interpretation:
The given problem needs to be solved in scientific notation and rounded off to the correct number of significant figure.
Concept introduction:
To add or subtract numbers in scientific notation, the numbers must have the same exponent.

Answer to Problem 126A
Round off to the correct number is
Explanation of Solution
Compute the following calculation.
Chapter 9 Solutions
Glencoe Chemistry: Matter and Change, Student Edition
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