Edited to show attempts: First post w00t. Just a quick explanation of how to do these problems would be appreciated. I have gmail invites for those who want them.
1. How much heat (in KiloJoules) is released when 50.0 grams of steam at 100 C is condensed to water at 100 C?
Phase change problem. I don't know where to start although I vaguely remember it utilized a picture of an upsloping line.
2. How many mL of 10
M NaOH are needed to make 500.0 mL of of 1.0
M NaOH?
I don't even know where to start. Molarity=moles solute X Liters solution
3. If 9.5 KJ of energy is absorbed by a block of ice. how many moles of ice would be melted?
4.18KJ = 9.5KJ/moles X 273 degrees K
4.How many grams of NaCl would be needed to make 3.5 L of a 2.0
M solution?
3.5L NaCl X 22.4 L. I'm drawing a blank.