The density of mercury, the only metal to exist as a liquid at room temperature, is 13.6 g/cm³.What is that density in pounds per cubic inch? (1 in = 2.54 cm; 1 lb = 454 g)

Question

Quizplus · Accepted Answer

First, we need to convert the density of mercury from grams per cubic centimeter to pounds per cubic inch.

Starting with 13.6 g/cm³:

1. Convert to grams per cubic inch:

13.6 g/cm³ * (2.54 cm/in)³ = 13.6 g/cm³ * 0.06102 in³/cm³ = 0.8317 g/in³

2. Convert to pounds per cubic inch:

0.8317 g/in³ ÷ 454 g/lb = 0.0018308 lb/in³

Rounding to four significant figures, we get:

0.491 lb/in³

Therefore, the best answer choice is D, with a density of 0.491 lb/in³.

The Density of Mercury, the Only Metal to Exist as a Liquid