What is the product of 877 and 0.345 expressed to the correct significant digits and written in proper scientific notation?
a. 302.6
b. 302
c. 3.03 × 102
d. 3.03 × 10-2

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?

Reduction is a reaction which results in a in electrons and a in positive charge of the atom or ion 1) a- loss 1) b- gain 2) a-increase 2) b-decrease

What happens to the temperature of a substance when the average kinetic energy of its particles increases?