Find number abcIf 9c1bb - 665b5 = a1602 find number abc. Multiple solutions may exist.
Correct answers: 21
The first user who solved this task is Djordje Timotijevic.
Dalton's atomic weightsIn 1803, John Dalton presented an essay on the absorption of gases by water, at the conclusion of which he gave a series of atomic weights for 21 simple and compound elements. He read his paper at a meeting of the Manchester Literary and Philosophical Society.