Using specic heat capacity tontl heat
Read this explanatim
Calculate the energy required to heat 513.03 ofetiianol om 103C to 233 C . FEW"?-
Assume lite specic heat capacity of ethanol under these conditions is 2744. .- g
. Be sure youranswer has the c
You can solve this problem by Ieaming to recognize four basic types of chemical reaction:
1. In a combination reaction two or more reactants form one product.
' For additional explanation
see your textbook:
The rst reactio
Since W turns out to be positive (meaning the energy of the system increases), it must he that work is done on the system by the
piston, that is, the piston moves in, compressing the system. This answers the third question in the table.
Interconirerting pressure and force Read W5 explanation
A cylinder measuring 8.7m wide and lcm high is lled with gas. The piston is pushed
down with a steady force measured to be 9.3le .
Calculate the pressure of the gas i
Gayle-"null", an: jun."
First, you need to understand the two dinerent ways in which energy can ow into or out of the MN:
Section 8.4: Heat
- Energy can now from the system to the water bath, or vice versa, as heat. If heat ows out of the
Identifying phase transitions on a heating curve
A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a
steady rate and the temperature recorded as time passes. Here is a graph ofthe results:
temperature fCl 1
Calculating pressure-volume work
Clidt on the following for more
A mixture of krypton and hydrogen gas is compressed from a volume of 61.01. to a volume 'lntdeuctiDn 10 ThermodynamiCS'.
of 41.01. ,while the pressure is held constant
common chemical groups
*Ueed when drawing a condensed chemical structure.
3.31445] 11101 'K Multiply by the value of R in units that you want, and
w=(soo.ooL-atm)- _ _ _ ,
0.08205 74L alzn 'rnol-l 'K-l divide by the value of R In units that you don t want.
Cancel units, and use the calculator to multiply and
4 divide. Also
Writing a standard fonnation reaction
Read this Eilplanation
1.f'll'n'te a balanced chemical equation iortile standard iormation reaction oisolid irontlll
The standam' limitation reaction oia chemical compound h