Applying Math 4. Calculate The equation for the decomposition of
silver oxide is 2A9,0 – 4Ag + 02. Set up a ratio to
calculate the number of oxygen molecules released
when 1 g of silver oxide is broken down. There are
2.6 X 1021 molecules in 1 g of silver oxide.

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.

Naoh + hbr -> nabr (salt) + h2o ca (oh)2 + 2hbr - - - > ca (br)2 + 2h2o

Answer//the law of conservation of mass.;