Please answer this as fast as y’all can!!

Calculate the change in entropy if br2(l) is converted into gaseous br atoms. s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer