Q.2.86 - An Introduction to General, Organic, and Biological Chemistry

Question

State the temperature on the Celsius thermometer to the correct number of significant figures: (2.3)

Step-by-Step Solution

Answer

Temperature is $4.8^{o}C$

Step 1: introduction

According to the thermometer portrayed in the figure, every division addresses one degree change in temperature. From the figure, it is known with assurance that the temperature lies somewhere in the range of $4-5^{o}C$.

Step 2: explanation

Since it shows up someplace somewhere between the two, the temperature can be accounted for as $4.8^{o}C$. Here, the number $4$ is sure, while the number $8$ is uncertain.

We know,

Number of significant figures = every one of specific digits + one uncertain digit

Number of significant figures  = $1+1=2$