Question

A 28.5 gram piece of iron is added to a graduated cylinder containing 45.5 mL of water. The water in the cylinder rises to the 49.1 mark. Calculate the density of the iron piece.

Answer 1

7.91 g/ml is the density of the iron piece of 28.5 gms.

Step-by-step explanation:

The density of a substance is defined as the volume it occupies. It tells the matter present in a substance.

The density is mass per unit volume and is denoted by p.

The formula for density is given by:

density (p) =
`(mass)/(volume)`

Data given is :

mass= 28.5 grams

V1 = 45.5 ml

V2= 49.1 ml

The initial volume of water was 45.5 ml, when iron piece of 28.5 grams was added the final volume was 49.1 ml.

Putting the values in the equation of density

p =
`(28.5)/(49.1-45.5)`

p = 7.91 g/ml

Since iron is a dense material it will occupy less volume