Consider the reaction below.
21 (aq) + Cl2(g) -
> 201 (aq) +12(aq)
Which half reaction correctly describes the reduction that is taking place?
Clo(g) + 2e-
201 (aq)
Clo(g) +
201 (aq)
27 (aq) -
2(aq) + 2e
(aq)+e
2 (aq) -

If you add 10ml of hot water to 10ml of cold water and the change in tempature 8°c calculate how much energy is gained by the cold water

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.