InterviewSolution
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InterviewSolution
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Rearragne the following (I to IV) in the order of increasing masses and choose the correct answer (Atomic masses O=16, Cu=63 and N=4) I. 1 Molecule of oxygen II. 1 atom of nitrogen IIIgt `1xx 10^(-10)`g atomic weight 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 |
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Answer» a) I. 1 molecule of `O_(2)` = (32)/(6.022 xx 10^(23)` = 5.3 xx 10^(-23)`g (ii) 1. atom of N= (14)/(6.022 xx 10^(23)`g = `2.3 xx 10^(-23)`g IIIgt `10^(-19)` g molecular weight of oxygen `= (10^(-10) xx 32 = 3.2 xx 10^(-9)`g IV. `10^(-10)`g atomic weight of copper `= 10^(-10) xx 63 =6.3 xx 10^(-9)`g `therefore` Order of increasing mass is II lt I lt III lt IV |
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