2.- Consider the reaction of sodium peroxide with water Na2O2 + H2O NaOH + O2

a. How mamy grams of oxylite (Na2O2) of 85% of purity is needed to produce 108g of O2?
b. How many grams of NaOH will be formed if 130g of oxylite (Na2O2) of 85% of purity react?
Please hel

Two changes are described below. a green banana turns yellow and ripens. a layer of rust forms on an iron nail. which statement is true about the two changes? a) both are chemical changes because new substances are formed. b) both are physical changes because only the physical state of the substances change. c) a is a physical change due to a change of state, but b is a chemical change because new molecules are formed. d) a is a chemical change due to a change of state, but b is a physical change because new molecules are formed.