One step in the production of copper is to heat copper (I) sulfide, Cu2S, with oxygen. This produces copper (I) oxide and sulfur dioxide gas according to the following reaction:

2Cu2S(s)
+ 3O2(g)
​→ 2Cu2O(s)

+ 2SO2(g)

What is the greatest mass of SO2 that can be produced from 15.0 mol Cu2S?

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?