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sveta [45]
3 years ago
12

Three isotopes of argon occur in nature. Calculate the average atomic mass of argon given the following relative atomic masses a

nd abundances of each of the isotopes.
Isotope Relative Atomic Mass Abundance
Ar-36 35.97 amu 0.337%
Ar-38 37.96 amu 0.063%
Ar-40 39.96 amu 99.600%
a
35.97 amu
b
37.95 amu
c
39.95 amu
d
38.96 amu
Chemistry
2 answers:
Volgvan3 years ago
6 0

Answer:

whats the question

Explanation:

Blababa [14]3 years ago
6 0

Answer:

Calculate the average atomic mass of argon to two decimal places, given the following relative masses and abundances of each of the isotopes: argon-36 (35.97 amu; 0.337%), argon-38 (37.96 amu; 0.063%), and argon-40 (39.96 amu; 99.600%). ... So the atomic mass of Ar is 0.99639. 96 + 0.0006337. 96 + 0.00337*35.97 = 39.957.

Explanation:

hope this help

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Answer:

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Explanation:

Data

moles of NaCl = ?

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Process

To solve this problem just calculate the molar mass of NaCl, and remember that the molar mass of any substance equals to 1 mol.

1.- Calculate the molar mass

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2.- Use proportions and cross multiplication

               58.5 g of NaCl ------------------- 1 mol

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                     x = (24 x 1) / 58.5

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