3.4 - Molar Volume Flashcards
What do you call the mass of one mole of substance?
The molar mass.
How do you find molar mass for monoatomic elements?
Use relative atomic masses listed on periodic table, expressed in g/mol
How do you find molar mass for diatomic elements?
Double the relative atomic mass from the periodic table, expressed in g/mol
How do you find the molar mass for compounds?
Add up the relative atomic mass of each atom, expressed in g/mol
You can use molar mass, a derived unit, as a conversion factor between what?
Moles and mass.
What do you call the volume occupied by one mole of a substance’s particles, at a given temperature and pressure?
Molar volume.
T or F, the particles are close enough in solids and liquids that the matter is incompressible.
True
The size and spacing of a substance’s particles affect its molar volume in which state(s)
Solid and liquid.
The size of particles doesn’t affect the molar volume in which state(s)?
Gas.
Due to thermal expansion, the volume taken up by one mole of particles will depend on the _____ of those particles.
Temperature.
Thermal expansion is more significant in which state(s)?
Gas.
Pressure and the separation of a matter’s particles (mostly gases) are directly or inversely related?
Inversely.
Molar volume is directly or inversely proportional to temperature?
Directly.
Molar volume is directly or inversely proportional to pressure?
Inversely.
What is Avogadro’s famous hypothesis to explain why adding up the volumes of gasses don’t always add the way we expect?
Equal volumes of all gases, at the same temperature and pressure, contain the same number of particles.
Why does adding 1 L of Nitrogen to 3 L of Hydrogen not make 4 L of ammonia?
Because the way the particles are arranged in the compound, 3H for every 1N
What do you call the temperature of 0 °C and 100kPa?
STP (standard temperature and pressure).
What are the two possible conversion factors between moles and volume?
1 mol/22.4 L or 22.4 L/1 mol
What is the ratio relating the amount of matter in a given volume, or mass per volume?
Density
Density ( a derived unit) can be used to convert between what and what?
Mass and volume.
What is a derived unit?
Something/something, a unit that describes the relationship between two units.
Molar mass/density = what?
Molar volume
molar mass/molar volume = what?
Density
density x molar volume = what?
Molar mass
