How much energy is given off by the following reaction, if 162.5 g of oxygen reacts with 216.7 g of ammonia (NH3)? (16 pts)
4 NH3 + 5 02 → 4 NO + 6 H2O
AH = -1225.6 kJ

A) +1245 kJ
B) +39830 kJ
C) -39830 kj
D) -1245 k)

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?

What is the main reason why some developing countries fear the increase the free trade policies around the world?

Is powdered sports drink ionic or covalent ? 10pts !