Which best describes the purpose of a controlled experiment?

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion

Which substance has non polar covalent bonds