Question

The mass of a substance of 3m³ having density of 1.8 x 10³ kg/m³ is ___________ .

1 point

3.6 x 10³ kg

3.2 x 10³ kg

5.4 x 10³ kg

5.2 x 10³ kg

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Answer 1

Answer:

3)

Explanation:

d=m/v

m=v*d

=3m^3*1.8*10^3kg/m^3

=5.4*10^3kg

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Answer 2

Given:

Substance of 3m³ has density of 1.8 x 10³ kg/m³

To find:

Mass of substance.

Calculation:

Density is defined as the mass of an object per unit volume , so we can say that:

Mass can be calculated as the product of the volume of the substance and the density of the material.

$\rm{ \therefore \: mass = volume \times density}$

$\rm{ = > \: mass =(3 \: {m}^{3}) \times (1.8 \times {10}^{ 3} \: kg {m}^{ - 3} ) }$

$\rm{ = > \: mass =5.4\times {10}^{ 3} \: kg }$

So, final answer is:

$\boxed{ \bf{ \: mass \: of \: substance=5.4\times {10}^{ 3} \: kg }}$