Hello i need your help. Please Please help me answer all the blanks i have to complete my assignment. Pls answer all. (i am really sorry because i tried alot to make this picture clear but i hope you will be able to see it clearly)

Consider the reaction 2x2y2+z2⇌2x2y2z which has a rate law of rate= k[x2y2][z2] select a possible mechanism for the reaction.

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Average acceleration: i have no idea how to do this.