Amount of substance, compounds, formulae and equations Flashcards
NO3 give the charge and the name
nitrate -1
OH give the charge and the name
hydroxide -1
NH4 give the name and the charge
ammonium +1
SO4 give the name and the charge
sulfate 2-
CO3 give the name and the charge
carbonate 2-
what is the name for water molecules which can exist within crystal structures
water of crystallisation
how do you calculate water of crystallisation
- write out two molecules involved
- write the masses of each molecule
- divide these by Mr to get number of moles
- divide all the numbers by the smallest number of moles
what is a mole
a way of measuring the amount of a substance
how many atoms/ molecules does 1 mole of something contain
6.02x10^23
how do you calculate the number of particles
avagadros constant x number of moles
what is the equation that links moles, mass and Mr
moles= mass/Mr
what is the equation that links moles, concentration and volume
moles= conc (moldm-3) x volume (dm3)
how do you convert cm3 to dm3
divide by 1000
what is the ideal gas equation and give units
pV-nRT
p=Pa
v=m3
n=mol
R= 8.31JK-1mol-1
T= K
what are standard conditions for the ideal gas equation
100kPa and 298K
