Al+NH4ClO4 =Al2O3+AlCl3+N2+H2O how many electrons are transferred, write the half reactions, what is reduced

Iknow #2 is d. i just need to know why

200. ml of 3.00 m nacl solution is diluted to a final volume of 500. ml. what is the molarity of the final solution?

Consider the equilibrium system: 2icl(s) ⇄ i2(s) + cl2(g) which of the following changes will increase the total amount of of cl2 that can be produced? all of the listed answers are correct decreasing the volume of the container removing the cl2 as it is formed adding more icl(s) removing some of the i2(s)