What is the mass of Potassium in 5.2g of KBr?

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

The arrangement of particles is most ordered in a sample of

15. what volume of cci, (d = 1.6 g/cc) contain6.02 x 1025 cci, molecules (ci = 35.5)(1) 10.5 l(2) 250 ml(3) 9.625 l(4) 1.712 lplz answer with step by step explanation