Classify Determine whether each of the follow- ing compounds is a molecular compound or
an ionic compound. How can you tell?

PBrz

Can someone me with 1 to 4 plz. fast

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?

Answer asap need by wednesday morning calculate the ph of 0.036m naoh best answer will be brainliest