Question

The density of glycerin is 1.26 Grams/cm^3. How many lbs/ ft is this? Use the conversion rates of 454g/1 lbs and 28317 cm^3/ 1 ft^3 . Express your answer to the correct number of significant figures. The density is .

Answer 1

78.6

The density is 78.6

#platofam

Answer 2

Hello!

The answer is:

The density is equal to:

`78.6(lb)/(ft^(3) )`

Why?

This a unit conversion problem, so, converting the density of glycerin from
`gram/cm^(3)` to
`(lb)/(ft^(3))` using the given conversion rates, we have:

`1.26(gram)/(cm^(3))*(1lb)/(454gram)*(28317cm^(3) )/(1ft^(3) )=78.59(lb)/(ft^(3) )`

Rounding to three significant figures, we have that the density is equal to:

`78.6(lb)/(ft^(3) )`

Have a nice day!