Which balanced equation represents an oxidation-reduction reaction?
(1) bacl2 + na2so4==> baso4 + 2nacl
(2) c+h2o ==> co + h2
(3) caco3==> cao + co2
(4) mg(oh)2 + 2hno3==> mg(no3)2 + 2h2o

Asolution contains 180 g of glucose (c6h12o6) and 162 g of water. what is the mole fraction of glucose?

Need ! asap will mark 10 pts using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers

State the effect on the concentration of the clo- ion when there is a decrease in the concentration of the oh- ion