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Some Basic Concepts of Chemistry
use the data given in the following table to calcu...

Question:
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%

Answer:

Molar mass of argon =

Atomic mass of ³⁶Ar = 35.96755 & abundance = 0.337

total atomic mass of ³⁶Ar = 35.96755 * 0.337= 0.121g/mol

Atomic mass of ³⁸Ar = 37.96272 & abundance = 0.063

total atomic mass of ³⁸Ar = 37.96272 * 0.063= 0.024g/mol

Atomic mass of ⁴⁰Ar =39.9624 & abundance = 99.600

total atomic mass of ⁴⁰Ar = 39.9624 * 99.600= 39.802g/mol

Therefore molar mass of argon = total mass of ³⁶Ar+ total mass of ³⁸Ar + atomic mass of ⁴⁰Ar

= 0.121 + 0.024 + 39.802= 39.947 g/mol

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Question:
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%

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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%

Question: 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%

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Question:
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%