Questions
3.011x1022 atoms of an element weight 1.158 gm.The atomic mass of the element is:
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a
10 amu
b
2.3 amu
c
35.5 amu
d
23 amu
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Correct option is D
Moles of atoms =3.011×10226.02×1023=120Atomic mass =massmoles=1.151/20=23Similar Questions
Carbon has the following three isotopes with relative abundances and masses (amu) shown in the table.
| Isotope | Relative abundance(%) | Atomic mass(amu) |
| 98.892 | 12 | |
| 1.108 | 13.00335 | |
| 14.00317 |
On the basis of above data, the average atomic mass of carbon will be
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