Amount of substance Flashcards
How many particles are there in one mole?
6.02 x 10^23 particles
What is the Avogadro constant?
The Avogadro constant is the number of particles in each mole of carbon-12
How do you find the mass of one mole of atoms of any element?
It is the relative atomic mass in grams.
What does the molar mass find?
The mass in grams in each mole of a compound.
What is the equation that links amount of substance, mass and molar mass?
amount = mass/ molar mass
What is the unit of molar mass?
g mol^-1
What is molecular formula?
Molecular formula is the number of atoms of each element in a molecule.
What is empirical formula?
Empirical formula is the simplest whole-number ratio of atoms of each element in a compound.
How do you convert between dm and cm?
You divide by 1000
What is the equation that connects amount, concentration and volume?
n = c x V
What is molar gas volume?
The molar gas volume is the volume per mole of gas molecules at a stated temperature and pressure
What is RTP?
20 degrees and 1atm pressure
What is always the value of molar gas volume at RTP?
24.0dm^3 or 24000cm^3
