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Use the data given in the following table to calculate the molar mass of occuring argon isotopes: Isotope 36 Ar 38 Ar 40 Ar Isotopic molar mass 35.96755 37.96272 g 39.9624 g mo * l ^ - 1; mo * l ^ - 1; mo * l ^ - 1 Abundance 0.337% 0.063% 600\% naturally

Posted by Vaibhav Pandey 4 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

??? ??? 4 years, 2 months ago

Molar mass of argon= Atomic mass of 36 Ar = 35.96755 and abundance = 0.337 Total atomic mass of 40 Ar = 39.9624*99.600= 39.802g/mol Therefore molar mass of argon = total mass of 36 Ar + total mass of 38 Ar + atomic mass of 40 Ar= 0.121+0.024+39.802 = 39.947g/ mol.

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