Thread: what is exact difference between 1 amu and molecular mass ?

for example, if sulphur(free) has 32 gram mass, what would be its amu?
also, i came across a problem in which 1 amu of HELIUM was said to have 4 atoms, where as normally 1 gram of helium has( 6.023 *10 's power23)/4 atoms. can anyone help me??

32g S?
lets see, molar mass is 32g approximently, so there would be 1 mole of sulphur ATOMs while its 1/8 mole of sulphur molecules since they tend to be in a ring of 8 atoms if i remember right.

you seem to have confused what amu means, amu is the atomic unit, wich is about 1/6.023*10^23 grams. a mole is 6.023*10^23