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Correct any answers that have the incorrect number of significant figures.(a) (3.8 ×

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro ISBN: 9780321910295 34

Solution for problem 63P Chapter 2

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro

Introductory Chemistry | 5th Edition

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Problem 63P

Problem 63P

Correct any answers that have the incorrect number of significant figures.

(a) (3.8 × 105) − (8.45 × 105) = −4.7 × 105

(b) 0.00456 + 1.0936 = 1.10

(c) 8475.45 − 34.899 = 8440.55

(d) 908.87 − 905.34095 = 3.5291

Step-by-Step Solution:
Step 1 of 3

Solution 63P

Here we have to calculate the correct number of significant figures. There are certain rules to track the significant figures from the calculated values. These are:

  1. For addition and subtraction, the result should contain same number of decimal places, as the measurement is carried out with the fewest decimal places.
  2. For multiplication and division,  the result should contain same number of decimal places, as the measurement is carried out with the fewest significant figures
  3. Exponential terms are not considered as significant figures.
  4. To get the correct significant figures, we have to rounding off the figures, If the leftmost removed number is 5 or more than 5, then preceding number should be increased by .

(a) (3.8 × 105) − (8.45 × 105)

= -4.65 x 105

= −4.7 × 105

This is the correct number of significant figures. This is because  3.8   has the fewest decimal places . Exponential term  is not considered as significant figures. As well as , the leftmost removed digit is more than 5, so the preceding number is increased by 1.

(b) 0.00456 + 1.0936

= 1.0981

= 1.0981

The correct number of significant figures is 1.0981. This is because  1.0936   has the fewest decimal places.

(c) 8475.45 − 34.899

= 8440.551

= 8440.55

The  correct number of significant figures is 8440.55 This is because 8475.45   has two decimal places.

(d) 908.87 − 905.34095

=  3.52905

= 3.53

The  correct number of significant figures is 3.53. This is because 908.87   has the lowest two decimal places. As well as the leftmost removed digit is more than 5, so the preceding number is increased by 1.

Step 2 of 3

Chapter 2, Problem 63P is Solved
Step 3 of 3

Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

Introductory Chemistry was written by and is associated to the ISBN: 9780321910295. The full step-by-step solution to problem: 63P from chapter: 2 was answered by , our top Chemistry solution expert on 05/06/17, 06:45PM. Since the solution to 63P from 2 chapter was answered, more than 397 students have viewed the full step-by-step answer. This full solution covers the following key subjects: answers, any, correct, figures, incorrect. This expansive textbook survival guide covers 19 chapters, and 2046 solutions. The answer to “Correct any answers that have the incorrect number of significant figures.(a) (3.8 × 105) ? (8.45 × 105) = ?4.7 × 105(b) 0.00456 + 1.0936 = 1.10(c) 8475.45 ? 34.899 = 8440.55(d) 908.87 ? 905.34095 = 3.5291” is broken down into a number of easy to follow steps, and 37 words. This textbook survival guide was created for the textbook: Introductory Chemistry, edition: 5.

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Correct any answers that have the incorrect number of significant figures.(a) (3.8 ×