Enthalpy Concepts
Enthalpy Practice
Gas Law Concepts
Gas Law Practice
Units
100
A things internal energy + its ability to do physical work
what is enthalpy
100
which segment represents boiling
d to e
100
PV = nRT represents what equation
ideal gas law
100
Carbon Dioxide is in a container originally with a pressure of 27.2 kPa and 21.251 L. The pressure increased to 167.55 kPa. What is the new volume of the container?
3.45 L
100
What is the unit for temperature for q = mCs△T
celcius
200
when do you use the equation: Q = mCs△T
when there is a temperature change
200
5.20 g of magnesium absorbs 50.3 J heat, how much will the temperature of the magnesium increase?
9.48 degrees
200
Use this equation when pressure is held constant
V1/T1 = V2/T2
(charles law)
200
Given that iodine is in a container at 997.73 K with a pressure of 436.69 and volume of 91.754 L, what is the new pressure id the temperature decreased to 833.47 K and the volume increase to 96.803 L
345.77 kPa
200
n represents what in PV=nRT
mols
300
a reaction that gives off energy as heat
exothermic
300
A sample of water with a mass of 83.429 g temperature is raised from 27.3 °C to 29.1°C when a hot piece of metal with a mass of 13.998 g with an original temperature of 100°C is added to the water. What is the specific heat of the metal?
0.633 J/gC
300
Standard temperature and pressure are
0 C and 1 ATM/1 barr
300
Argon is put into a container with a pressure of 805.1 kPa at 957.83 K. The original temperature of the argon was 57.28 K. What was the original pressure in the container?
48.15 kPa
300
WHat unit is temperature in for gas laws
kelvin
400
the phase change from solid to liquid
what is fusion (or melting)
400
3.2 g H2O (s) @ 0 C changes to 3.2 g H2O (l) @ 0 C. How much enthalpy is produced?
3.91 kJ
400
What type of relationship has one unit increasing as the other increases (direct or inverse)
direct
400
Sulfur Dioxide is put into a container with a volume of 31.541 L and a temperature of 609.45 K. The container that the SO2 was in increased to 56.621 L. What is the new temperature in the container?
1094.1 K
400
What is the conversion factor from atm to torr
1 atm = 760 torr
500
Q is positive in what type of reaction
endothermic
500
How much energy is needed (in kJ) for 43.20 g H2O to change from 34.60 C to 117.3 C?
110.9 kJ
500
give an example of an inverse relationship
P1V1 = P2V2
(Boyles law)
500
Given that 1.7751 mols of neon have a pressure of 767.37 kPa in a container with a volume of 89.931 L, what is the temperature of the system?
4676 K
500
if pressure is in atm, the volume is in L, n is in mol and temperature is in kelvin, what value of R should you use?
0.082057 (L atm)/(mol K)