Calculate the number of oxygen atoms in 1.58g of kmno4

Write skeleton equations for the following reactions c. aluminum(s)+copper(i) chloride(aq) > aluminum chloride(aq)+copper(s)

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

3) in peaches, [oh]=3.16x10-11 m a) find [h+ ] b) what is the ph? c) is the solution acidic, basic, or neutral?