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Sagot :
The density of any material is caculted by the nex formula:
[tex]\text{density}=\frac{mass}{volume}[/tex]the volume according to the text is 8.4 ml. The mas we have calculate by difference, the difference of the empty picnometer and the picnometro full with the selected liquid:
mass of the liquid = mass of full picnometer- mass empty picnometer =18.4g-9.4=9g (I asume the mass unit here are in grams since ther is not that info in the text)
then we can calculate the density:
[tex]\text{density}=\frac{mass}{volume}=\frac{9g}{8.4ml}=1.07\frac{g}{ml}[/tex]
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