Which substance can not be decomposed by a chemical change? (1)mercury(ll) oxide (2) phosphorus (3) carbon monoxide (4) carbon dioxide

What does the cell nucleus do or, how does it function?

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

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1: