Astudent is working with four different solid substances: sodium (na), calcium (ca), copper (cu), and iodine (i). which substance is most likely to break easily into many smaller pieces?

a. sodium
b. calcium
c. copper
d. iodine

The most efficient way to establish the best possible economizer position is to measure

What is the molar mass of potassium nitrate, kno3

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?