1) Find the energy change of the system required to change 200 g of water at 273 K. 2)Find the energy change of the system required to change 1200 g of steam at 373
3)What is the heat change for a 348 g sample of steam at 373 K.

29.1-12=17.1the answer is this one

Where is the following?

Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.

Ithink carbon dioxide, i am not completely sure.tell me if i am wrong.