obtén la formula empírica y molecular de una sustancia compuesta por Na 45,1% Mg 32,4%y o 22,6% su masa malecular es 172 gr

What are some characteristics of a free enterprise economy?

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

According to the cell theory, which describes cells? a. all organisms are composed of multiple cells. b. all cells have the same structure and function. c. cells are found in everything on earth. d. living organisms are not created spontaneously