A system loses 737 kJ of heat, resulting in a change in internal energy of the system equal to -246 kJ. a. How much work is done?
v kJ
6. Was work done BY or ON the system?

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m