Question

A piece of brass of volume 30cm3 has a mass of 252 g . find density of brass

Answer 1

Answer:

Answer:

1) 8.4 g/cm³

2) 8400 kg/m³

Explanation:

The formula for getting density is given by :

Density = mass / volume

We need to calculate the density in g/cm³ and in kg/m³.

1) g/cm³

Applying the formula we have :

Density = 252/30 = 8.4

8.4 g/cm³

2) in kilograms per meters cube

We convert the mass to kilograms.

Mass = 252/1000 = 0.252 Kgs

We convert the volume to cubic meters.

1 m³ = 1000000 cm³

30/1000000 × 1 = 0.00003 m³

Density = mass/volume

Substituting we have :

0.252/0.00003 = 8400 kg/m³

Explanation:

Answer 2

Answer:

8.4 g / cm³

Explanation:

Given :

Mass m = 252 g

Volume V = 30 cm³

We are asked to find density :

We know :

Density = Mass / Volume

= > d = m / V

Putting values here we get :

= > d = 252 / 30 g / cm³

= > d = 25.2 / 3 g / cm³

= > d = 8.4 g / cm³

Hence density of brass is 8.4 g / cm³.