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

mammal

explanation:

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.