For the chemical reaction
2ki + pb(no3)2 — pbl2 +
2kno3
what mass of lead(ii) iodide is produced from 1.81 mol of potassium iodide?

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?

State one important difference between a physical change and a chemical change?

In order to complete this lab. you will need to be familiar with some common chemistry terms. complete the chemical change puzzle and list the relevant terms and their meaning below a.rectant b.product c.supernate