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If 15 drops of ethanol from a medical dropper weight 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? The density of ethanol is 0.80g/ml

Respuesta :

Answer : The number of drops it takes from a dropper to dispense 1.0 ml of ethanol is, 20 drops

Solution : Given,

Density of ethanol = 0.80 g/ml

Mass of ethanol = 0.60 g

First we have to calculate the volume of ethanol.

Formula used : [tex]Density=\frac{Mass}{Volume}[/tex]

[tex]0.80g/ml=\frac{0.60g}{Volume}[/tex]

[tex]Volume=\frac{0.60g}{0.80g/ml}=0.75ml[/tex]

The volume of ethanol is, 0.75 ml

Now we have to calculate the number of drops it takes from a dropper to dispense 1 ml of ethanol.

As, the number of drops in 0.75 ml of ethanol = 15

So, the number of drops in 1.0 ml of ethanol = [tex]\frac{15}{0.75}\times 1.0=20[/tex]

Therefore, the number of drops it takes from a dropper to dispense 1.0 ml of ethanol is, 20 drops

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