Avogadro defined one mile of carbon-12 atoms to have a mass of exactly 12 grams. Calculate the number of oxygen gas molecules in 1 mole

I’d have to say no because without oxygen in the water the fish would all be dead. so if you want to fish for dead fish, pick the ponds with the lowest oxygen concentrations.

The formula is (nh4)2co3

Answer (b) supersaturation;