Question

The density of water is 1.00 `g`/`cm^3`. What is this density in `lb`/`ft^3`?

Answer 1

The density of water is `"62.7 lb/ft"^3"`.

Explanation:

Use dimensional analysis.

`"1 g = 0.00220462 lb"`

`"1 cm"^3=3.53147xx10^(-5) "ft"^3"`

`(1.00cancel"g")/(1cancel"cm"^3)xx(1cancel"cm"^3)/(3.53147xx10^(-5)"ft"^3)xx(0.00220462"lb")/(1cancel"g")="62.7 lb/ft"^3"`