A box weighed on a triple beam balance to be 400g. It has a volume of 20 ml. What is the density?

 The density is 20 g/ml

Explanation:

Density is defined as the mass contained by a substance per unit volume.

To calculate the density, we use the equation:

Mass of box = 400 g

Volume of box =  20 mL

Putting values in above equation, we get:

Thus the density is 20 g/ml

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