Calculate the mass of sodium sulfide needed to prepare 0.32 m sodium sulfide in
50.mL of water.

Which is a characteristic of mixtures?

What is the percentage composition of carbon in the compound ch4

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