Question

4 g sample of ethyl alcohol contains 0.002 g of water .The amount of pure ethyl alcohol to the proper number of significant figures is

Answer 1

We're going to use the formula below to find the volume:

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empoweryourknowledgeandhappytrivia.wordpress.com

I should mention that when you are talking about liquids, the volume will be expressed in terms of milliliters (mL). For solids, the volume will be expressed in cubic meters (

c

m

3

).

We are given the density and mass of ethyl alcohol; so all we have to do is rearrange the equation to solve for the volume:

V

×

D

=

m

V

×

V

V

×

D

D

=

m

D

V

=

m

D

Plug in your known values:

V

=

35.5

g

0.789

g

m

L

Therefore, the volume is 45.0mL