# The density of ether is 0.714 g/mL. what is the mass of 1.45 L of ether?

Jun 18, 2018

$\text{1040 g}$

#### Explanation:

Let's first convert the volume into mL:

$\text{1.45 L" * ("1000 mL")/("1 L") = "1450 mL}$

$\text{density}$ $= \left(\text{mass")/("volume}\right)$

So

$\text{mass" = "density" \ *\ "volume}$

$= \text{0.714 g/mL" * "1450 mL" = "1035.3 g}$

Final answer: the mass of ether is $\text{1040 g}$ ($3$ significant figures)

Jun 18, 2018

$\text{1040 g}$.

#### Explanation:

The density being $\text{0.714 g/mL}$ means that these ratios are all correct for ether:

$\text{0.714 g"/"1 mL" = "714 g"/"1000 mL" = "714 g"/"1 L}$

So, using these proportions, we can figure out the mass of a sample of ether, given that its volume is $\text{1.45 L}$:

$\text{714 g"/"1 L" = ("714 g" xx 1.45)/("1.45 L") = "1035.3 g"/"1.45 L}$

We'll need $3$ significant figures in our answer, because that's the least number of significant figures given in the question—so, our answer would be rounded to $\text{1040 g}$.

Jun 19, 2018

1.0353 kg.

#### Explanation:

The simplest way to handle it is like this:

Density = Mass / Volume, therefore Mass = Volume x Density.

Volume = 1.45 litres, and Density is 0.714 g/ml. Density in kg/litre is numerically identical.

So Mass = 1.45 x 0.714 = 1.0353 kg,