How do you work out the relative molecular mass ofHelium,Hydrogen.Potassium sulphide,Calcium carbonate,Lithium Flouride Aluminium OxideThanks
I hope that you have access to a periodic table with the relative atomic mass of each elementIf not, do soYou can download and print from the internet: 1) Helium is a mooatomic element : molar mass 4.0026g/mol 2) Hydrogen is a diatomic molecule: molar mass 21.008 2.016g/mol 3) Potassium sulphide formula K2S : molar mass 239.098+32.066 110.262g/mol 4) Calcium carbonate: Formula CaCO3: Molar mass 40.078 +12.011+315.999 100.086g/mol 5) Lithium fluoride: Formula LiF Molar mass 6.941+18.998 26.939g/mol 6) Aluminium oxide: Formula Al2O3 Moalr mass 226.982+315.999 101.961g/mol I have used the RAM from the periodic tableDepending on how far advanced you are in your studies, your teacher may use RAM rounded to a whole numberFor instance, carbon 12 and oxygen 16If this is so, then you need to use these rounded values, but the method is exactly tha same.
