Identify a situation in which it is important to use density instead of mass when comparing how heavy two materials are

Density is widely used to identify  pure substances instead of mass since it is an intensive property which does not depend on the size of the sample. Density is a ratio of mass to volume,which does not vary with the size of the sample. The density of the larger sample will be the same as the density of the smaller sample.

Hi! your answer would be  the women's association.  here's why:   "the childrens toys" should be "the children's toys".  there's no apostrophe anywhere, and should go after "children". it does  not go after the 's' because children is already plural, and you usually only add an apostrophe after a plural noun ends with an s, like boys or girls, for example. that is the boys' toys."the women's association", is correct.  it's kinda like the one above.  "the childrens' toys", is not correct. reason why is explained in the first one.  "none of these" isn't correct, because "the women's association" is correct.  hoped i and if you have any more questions, ask me.  -dawn

Ithink this is true.