Question

calculate no of carbon atoms present in 4.6g ethanol

Answer 1

Number of moles need to be calculated first, which is equal to 4.6/23 ie wt by gram molecular mass. This is 0.2mol. Now, we know that one mole has avogadro number molecules. Hence, 0.2*6.023*10power23 is that number of sodium atoms. Then gram atoms is itself equal to moles of sodium. This will be 0.2g atoms in given wt of substance. Please up vote the answer if it helped you.