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

3 Answers
Dr. K. · Stefan V.
Jun 18, 2018

#"1040 g"#

Explanation:

Let's first convert the volume into mL:

#"1.45 L" * ("1000 mL")/("1 L") = "1450 mL"#

#"density"# #= ("mass")/("volume")#

So

#"mass" = "density" \ *\ "volume"#

#= "0.714 g/mL" * "1450 mL" = "1035.3 g"#

Final answer: the mass of ether is #"1040 g"# (#3# significant figures)

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zhirou
Jun 18, 2018

#"1040 g"#.

Explanation:

The density being #"0.714 g/mL"# means that these ratios are all correct for ether:

#"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 #"1.45 L"#:

#"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 #"1040 g"#.

Simon Moore
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,

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