When hydrogen peroxide decomposes, what mass of
hydrogen peroxide is needed
in solution to produce 1.6 g of
oxygen gas?

What is the chemical name of the compound ti2o3? use the list of polyatomic ions and the periodic table to you answer.

4al + 3o2 → 2al2o3 what does the "3" in front of o2 stand for? a) it indicates that there are 5 oxygen atoms after you add the coefficient and the subscript. b) it indicates that that there are are total of 6 oxygen atoms all bonded together as a single molecule. c) it indicates that there are 3 oxygen molecules chemically bonded to each other in the reaction. d) it indicates that there are 3 separate oxygen molecules in the reaction.

If this sedimentary rock layer is truly the oldest one of marine origin, what do you think that tells usabout the formation of earth's oceans?