How is a compound different from a mixture?

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.

Why is the bottom layer of a trophic pyrimid the