1.

3.011xx10^(22) atoms of an element weighs 1:15gm. The atomic mass of the element is:

Answer»

23
10
16
35.5

Solution :ATOMIC MASS in gram=Mass of `6.022xx10^(23)` ATOMS
`=(1.15xx6.022xx10^(23))/(3.011xx10^(22))=23`


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