Who is that great man measured the mass of atoms!? Why can't I? what did he do? How did he do?
Are those measurings even accurate?
Answers
John Dalton is that great man measured the mass of atoms.
Because atoms are much too small to measure individually and do not have charges, there is no convenient way to accurately measure absolute atomic masses.
He measured it by taking a reference mass point of hydrogen. Dalton decided to use hydrogen as the unit for his system of atomic masses. By weight, the ratio of oxygen to hydrogen in water is 7.94:1 and the ratio of nitrogen to hydrogen in ammonia is 4.63:1.
John Dalton is that great man measured the mass of atoms.
Because atoms are much too small to measure individually and do not have charges, there is no convenient way to accurately measure absolute atomic masses.
He measured it by taking a reference mass point of hydrogen. Dalton decided to use hydrogen as the unit for his system of atomic masses. By weight, the ratio of oxygen to hydrogen in water is 7.94:1 and the ratio of nitrogen to hydrogen in ammonia is 4.63:1.