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Chapter 3: Q1 P (page 61)

3-1. How many significant figures are there in the following numbers?

(a) 1.903 0

(b)0.0391 0

(c) 1.40×104

Short Answer

Expert verified
  1. The significant figures of 1.903 0 is 5
  2. The significant figures of 0.0391 0 is 5
  3. The significant figures of1.40×104is 3

Step by step solution

01

The significant figures of 1.903

(a)

The question is given 1.903 0.

So the significant figures are (1,9,0,3,0)

As all zeros after decimal are also significant along with all non-zero numbers

02

The significant figures of 0.0391 0

(b)

The question is given 0.0391 0

So the significant figures are (0, 3, 9, 1, 0)

As before decimal is non-significant if it does not have any non-zero number before it.

03

The significant figures of 1.40×104

(c)

The question is given1.40×104

So the significant figures are (1, 4, 0)

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