
Concept explainers
(a)
Interpretation: The scientific number of 9367421 to be determined.
Concept introduction: The expression of a number as a product of a number between 1 and 10 and appropriate
Conversion from scientific notation to real number is as follows:
If n>0 then,
If n<0 then,
(a)

Answer to Problem 5A
The numbers is
Explanation of Solution
The given number is 9367421. The exponent is +6 because decimal point must be moved six places to the left. Scientific notation of number is as follows:
For the number 9367421 scientific numbers is
(b)
Interpretation: The scientific number of 7241 to be determined.
Concept introduction: The expression of a number as a product of a number between 1 and 10 and appropriate
Conversion from scientific notation to real number is as follows:
If n>0 then,
If n<0 then,
(b)

Answer to Problem 5A
The numbers is
Explanation of Solution
The given number is 7241. The exponent is +3 because decimal point must be moved three places to the left. Scientific notation of number is as follows:
For the number 7241 scientific numbers is
(c)
Interpretation: The scientific number of 0.0005519 to be determined.
Concept introduction: The expression of a number as a product of a number between 1 and 10 and appropriate
Conversion from scientific notation to real number is as follows:
If n>0 then,
If n<0 then,
(c)

Answer to Problem 5A
The numbers is
Explanation of Solution
The given number is 0.0005519. The exponent is -4 because decimal point must be moved four places to the left. Scientific notation of number is as follows:
For the number 0.0005519 scientific numbers is
(d)
Interpretation: The scientific number 5.408 to be determined.
Concept introduction: The expression of a number as a product of a number between 1 and 10 and appropriate
Conversion from scientific notation to real number is as follows:
If n>0 then,
If n<0 then,
(d)

Answer to Problem 5A
The numbers is
Explanation of Solution
The given number is 5.408. The exponent is 0 because decimal point does not have moved. Scientific notation of number is as follows:
For the number 9367421 scientific numbers is
(e)
Interpretation: The scientific number of
Concept introduction: The expression of a number as a product of a number between 1 and 10 and appropriate
Conversion from scientific notation to real number is as follows:
If n>0 then,
If n<0 then,
(e)

Answer to Problem 5A
The number is
Explanation of Solution
The given number is
(f)
Interpretation: The scientific number of
Concept introduction: The expression of a number as a product of a number between 1 and 10 and appropriate
Conversion from scientific notation to real number is as follows:
If n>0 then,
If n<0 then,
(f)

Answer to Problem 5A
The numbers is
Explanation of Solution
The given number is
For the number
Thus the exponent value of 10 is 6.
(g)
Interpretation: The scientific number of 0.000000007215 to be determined.
Concept introduction: The expression of a number as a product of a number between 1 and 10 and appropriate
Conversion from scientific notation to real number is as follows:
If n>0 then,
If n<0 then,
(g)

Answer to Problem 5A
The numbers is
Explanation of Solution
The given number is 0.000000007215. The exponent is -9 because decimal point must be moved nine places to the left. Scientific notation of number is as follows:
Thus the number 0.000000007215 scientific numbers is
(h)
Interpretation: The scientific number of 0.721 to be determined.
Concept introduction: The expression of a number as a product of a number between 1 and 10 and appropriate
Conversion from scientific notation to real number is as follows:
If n>0 then,
If n<0 then,
(h)

Answer to Problem 5A
The numbers is
Explanation of Solution
The given number is 0.721. The exponent is -1 because decimal point must be moved one places to the right. Scientific notation of number is as follows:
For the number 0.721 scientific numbers is
Chapter 5 Solutions
World of Chemistry, 3rd edition
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