Question

Question 6 (1 point)
The density of isopropyl alcohol which is rubbing alcohol is 0.786 g/mL. What is the
volume of a 20.0 g sample of isopropyl alcohol?
a) 0.0396 mL
Ob) 25.4 mL
Oc) 20.0 mL
O d) 15.7 mL

Answer 1

The Correct Answer is 25.4 mL.

• Volume is cubic measurement of the area taken up by a three-dimensional object.
• A substance's density is defined as its mass per unit of volume. Density is most frequently represented by the symbol.
• Isopropyl alcohol is an organic chemical that is colourless, flammable, and has a distinct alcoholic smell. It is the simplest illustration of a secondary alcohol since the alcohol's carbon atom is joined to two additional carbon atoms as an isopropyl group and a hydroxyl group.

Given,

Density of isopropyl alcohol is 0.786g/mL

mass of sample is 20g

volume = ?

• Density = mass / volume
• Volume = mass / density
• = 20 / 0.786 = 25.4 mL

Therefore the volume of given sample of isopropyl alcohol is option C) 25.4 mL.

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