Question

The mass of 25 cm cube of a certain substance is 87.2 calculate its density with due regard to significant figures

Answer 1

Given : The mass of 25 cm³ of a certain substance is 87.2 g

To find : density  with due regard to significant figures

Solution:

mass = 87.2  gm

Volume  =  25 cm³

Density  = mass/volume

=>  Density = 87.2/25   g/cm³

=> Density = 87.2 * 4 / (25 * 4)

=> Density =   348.8 /100

=> Density =   3.488  g/cm³

=>  Density =   3.5  g/cm³

Density =   3.5 g/cm³

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