InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Rearrange the following (I to IV) in the order of increasin masses and choose the correct answer from (A), (B), (C) and (D) (At. Mass N=14, O=16, Cu=63) (I) 1 molecule of O (II) 1 atom of nitrogen (III) `1xx10^(-10)`g molecular mass of oxygen (IV) `1xx10^(-7)` atomic mass of copper.A. II lt I lt III lt IVB. IV lt III lt II lt IC. II lt III lt I lt IVD. III lt IV lt I lt II |
|
Answer» Correct Answer - A (I) Mass of one O atom `= (16g)/(6.02xx10^(23))` `=2.66xx10^(-23)g` (II) Mass of one N atom `=(14g)/(6.02xx10^(23))` `=2.33xx10^(-23)`g (III) 1g-molecule of oxygen = 32 g `1xx10^(10)` g-molecule of oxygen `=32xx10^(-10)=3.2xx10^(-9)g` (IV) 1 g-atom of copper = 63 g `1xx10^(-7)g` g-atom of copper `=63xx10^(-7)=6.3xx10^(-6)g` Arranging in the increasing order of masses II lt I lt III lt IV |
|