Terms
Unit Cell
How many mmHg are in 1 atm?
760
The energy an object has due to motion
solids are closely packed together and vibrate constantly -- vibrations increase when temp increases
What volume does 2 moles of gas occupy at STP?
44.8 L
allotrope
chemical elements that exist in two or more different forms, in the same physical state
How many atm is 101.3 kPa?
1 atm
What types of forces exist between particles of a liquid?
How many crystal structures are there?
How many particles are in 3 moles of gas?
18.06 x 10^23 particles of gas
What is the normal boiling point?
The temperature at which the vapor pressure of a liquid is equal to 1 atmosphere
106.7 kpa
What is the speed of O2 gas molecules?
1000 mi/hr or 1700 km/hr
What is a solid that lacks an ordered internal structure called?
amorphous solid
What is the molar mass of 4 moles of CO2 gas?
176 g
Define vapor pressure
the pressure above a liquid in a sealed container caused by collision of vaporized particles with the walls of the container
Great job studying!
YAY
What is the difference between evaporation and boiling?
evaporation is at the surface, at any temp
boiling is throughout the liquid at the temp when VP inside bubbles = external pressure (usually at 100 degrees celsius)
Give me an example of an amorphous solid
glass
Convert 20 grams of Li2Se to particles?
20 grams/92.8 g * 6.02 x 10^23=
Elastic collision
collision between particles where no momentum is lost
Convert 347 kPa to mmHg?
2602 mmHg
What is sublimation?
A change of a substance from solid to gas
What are the assumptions of gases in kinetic theory?
elastic collisions
(1) the particles in a gas are in constant, random motion, (2) the combined volume of the particles is negligible, (3) the particles exert no forces on one another, (4) any collisions between the particles are completely elastic
How much volume does 28 grams of N2 take up?
22.4 L