Question

Maximum density of $H_{2}O$is at the temperature

• A. ${32}^{o}F$
• B. ${39.2}^{o}F$
• C. ${42}^{o}F$
• D. $4^{o}F$

Answer 1

The correct option is B ${39.2}^{o}F$

Maximum density of water is at $4^{0}C$

Here, the value in degree celsius is converting to degree Fahrenheit.

$T\left(°F\right)=\left(T\right(°C)\times \frac{9}{5})+32$

or

$T\left(°F\right)=\left(T\right(°C)\times 1.8)+32$

We have,

$T{(}^{0}C)=4^{0}C$

Then,

$T\left(°F\right)=(4\times 1.8)+32={39.2}^{o}F$