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What is the percent by volume of 10mL ethanol in 50mL solution?

Sagot :

Indrawboyidn

Further explanation  

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight/volume,), molarity, molality, parts per million (ppm), or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.  

There are several concentration units in percentages that can be used:  

Percent Volume (% V / V), total volume (ml) of solute in 100 ml of solution.  

[tex]\tt \%volume=\dfrac{volume~solute}{volume~solution}\times 100\%[/tex]

Given

10 ml ethanol

50 ml solution

Required

The percent by volume

Solution  

the percent volume :

= (solute volume : solution volume) x 100%

= (10 ml :  50 ml) x 100%

= 20%

 

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