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If 116 grams of Ethanol is needed for a chemical reaction, what volume of liquid will you use? Density of Ethanol is 0.789 g/mL.

Follow rule of Significant Figures.

(Show solution)​


Sagot :

The volume of liquid : 147 ml

Further explanation  

Density is a quantity derived from the mass and volume  

Density is the ratio of mass per unit volume  

The unit of density can be expressed in g/cm³ or kg/m³  

Density formula:  

[tex]\tt \rho=\dfrac{m}{V}[/tex]  

ρ = density  

m = mass  

V = volume  

Given

116 grams Ethanol

Density : 0.789 g/ml

Required

The volume

Solution

Input the value :

V= m : ρ

V= 116 : 0.789

V = 147.022 ml

Round the result to the least number of sig fig from the measured value:

116 = 3 sig fig

0.789 = 3 sig fig

The result should have 3 sig fig

So the result = 147 ml

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