Topic 5: Quantitative Chemistry Flashcards
What is a mole?
The unit for the amount of substance
What is Avogadro’s Constant?
The number of particles in one mole? 6.02x10^23
What is the molar mass of a substance?
The mass per mole of a substance in g/mol
What is empirical formula
Empirical formula is the simplest whole number ratio of the elements present in one molecule or formula unit of the compound
What is molecular formula
The molecular formula is the formula that shows the number and type of each atom in a molecule
Give the equation linking moles, mass, and relative molecular mass
molecular mass x moles = mass
Give the equation linking moles, concentration, and volume
volume x concentration = moles
What is the volume of one mole of gas at RTP
24 dm3
Give the equation linking moles, number of particles and Avogadro’s constant
avogadro’s constant x moles = no. of particles
