Balance the chemical equation below using the smallest possible whole number stoichiometric coefficients. nh, g) +0,g) + chịg) - hcn(aq) + h2o(0) 0-0 . o xs ?

If equal masses of the listed metals were collected , which would have a greatest volume ? a. aluminum 2.70,b.zinc7.14,c.copper 8.92,d.lead 11.34

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

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?