SnO2 (s) + 2C (s) → Sn (1) + 2CO (g)
Interpret the chemical equation in terms of moles and mass.
Please help ASAP

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?

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.

Rank the following four acids in order of increasing bronsted acidity : h2f+ , ch3oh, (ch3)2oh+ , ch3sh2+