Day 2 of Energy - Enthalpy & Molar Enthalpy

-once again, no 'delta' symbol appears - for now it is just a 
(I haven't figured out the delta symbol part yet :<(

Two equations to consider

(1) H = nHx     or  (2) nHx = -mcT

where n - moles of system substance;   Hx  - molar enthlapy;    H  - enthalpy/ heat


If the question mentions the surroundings
- typically water (or a water-based solution, like a dilute acid or dilute base)
-surrounding information - amount of solution (volume, mass), temperature change info about surroundings
Then use the second equation [nHx = -mcT]
-when working with the mcT portion of the equation, make sure that mass (m) and the heat capacity (c) and the temperature change (T) are all for the same substance (the surroundings)


If the surroundings are not mentioned
-use the first equation



Other tidbits to consider
-the question may ask for or provide mass - convert to moles (n)

From today:
Do the following questions. Use proper form with your solutions.

Page 308 # 2 and Page 312 #1ab & 4** [H = nHx or nHx = -mcT]*
Page 310 – 4 & 5 and Page 312- 2, 3, 5
*where the H = 'delta'H
**don't let p312 #4 confuse you, the temperature mentioned is meant to mislead you, did it?