How is a chemical change different from a physical change?

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

Stage in which a typical star has completely stopped fusion

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