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  • 02-02-2019
  • Chemistry
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What is the number of moles in 15.0 g AsH3?

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AsiaWoerner AsiaWoerner
  • 11-02-2019

We are given with the mass of Arsine ([tex]AsH_{3}[/tex]

The mass of arsine is 15g

there is a relation between moles, mass and molar mass of any compound which is

[tex]moles=\frac{mass}{molarmass}[/tex]

The molar mass of Arsine = atomic mass of As + 3X atomic mass of H

the molar mass of Arsine = 74.92 + 3X 1 = 77.92 g/mol

Let us calculate the moles as

[tex]moles=\frac{15}{77.92}=0.192mol[/tex]


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