Copper sulphate was electrolysis for 5 mins using copper electrodes and the below info shows the mass of the anode and of the cathode for electrolysis and after electrolysis. calculate the amount of copper deposited Before electrolysis in copper sulphate:-

Anode: 1.16g

Cathode: 1.28g

After electrolysis in copper sulphate :-

Anode: 0.85g

Cathode: 1.57g

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided

Given the following equation: 2a1 + 3mgcl2 --> 2alcl3 + 3mg how many moles of aluminum chloride are produced from 2.5 moles of magnesium chloride?