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प्रश्न
Use the data given in the following table to calculate the molar mass of naturally occurring argon isotopes:-
| Isotope | Isotopic molar mass | Abundance |
| 36Ar | 35.96755 gmol-1 | 0.337% |
| 38Ar | 37.96272 gmol-1 | 0.063% |
| 40Ar | 39.9624 gmol-1 | 99.600% |
संख्यात्मक
उत्तर
Molar mass of argon
`=[(35.96755xx0.337/100)+(37.96272xx0.063/100)+(39.9624xx90.60/100)]" gmol"^-1`
`=[0.121 +0.024+39.802]" gmol"^-1`
= 39.947 gmol-1
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अध्याय 1: Some Basic Concepts of Chemistry - EXERCISES [पृष्ठ २८]
