Question

"Calculate the amount of heat (kcal) released when 18.0 g (grams) of steam are condensed at 100.0 C and the resulting water is frozen and cooled to 25.0 C."

The only problem that I'm having is the amount of physical and temperature changes that there are. I'm new and still learning all of this. If anyone could please tell me how many physical and temperature changes there are than I can do the rest on my own (the equations). Thank you!

Answer 1

temp changes:
water from 100 to 0C
ice from Oc to xxxx

Now xxxx. if the water is frozen, it freezes at 0C, so you must mean cooled to -25C.

Physical changes:
steam condensing
water freezing