Hòa tan hoàn toàn 1,19 g hh gồm 2 kim loại Al và Zn bằng dd HCl dư sau pư thu được 0,896 lít khí H2 (đktc) .Ting1 % (m) mỗi kim loại trong hh

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

According to thomson, the atom is a positively charged cloud with electrons scattered throughout. what would the alpha particles do when they hit the foil if thomson were correct

Drag each pressure unit with the corresponding number to describe standard atmospheric pressure