(05.04 LC) Which of the following is a valid mole ratio from the balanced equation 2Fe2O3 + 3C — 4Fe + 3C02? (4 points)
a.
Select one:
4 mol C
3 mol Fe
2 mol Fe, O,
b.
4 mol C
3 mol C
C
4 mol CO2
4 mol Fe
d.
3 mol CO2

If 200.0g of copper(ll) sulfate react with an excess of zinc metal, what is the theoretical yield of copper

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

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?