Calculate answers to the following problems to the correct number of significant figures.
30.07g/0.106ml=

d = 283.68 g/mL

Explanation:

Here the unit given are gram/ milliliter. The given data shows that its density, because,

density = mass/ volume

d = m/v

d = 30.07 g/ 0.106 mL

d = 283.68 g/mL

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

Symbol:

The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represen t the density.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.