Chp 4_formulas

• vol of sub= density x mass
• no. of mols = (6.03x10^23)x no. of molecules
• mass of subs = mols x MR
• no. of mols of a type of atom = no. of mol x no. of type of atom in 1 molecule -> eg: CO2, C=1 and O=2
• mass of a type of atom rate = mr of atom x no. of mols of a type of atom
• no. of a type of atom = (6.02x10^23) x no. of mols of a type of atom