Answered

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What is the number of moles in 15.0 g AsH3?
O 5.2 mol
O 1200 mol
O 0.44 mol
O 0.19 mol

Sagot :

Answer:

n = 0.19 mol

Explanation:

Given mass = 15 g

The molar mass of AsH₃ = 77.94 g/mol

We need to find the number of moles in 15 g of AsH₃. We know that,

No. of moles = given mass/molar mass

[tex]n=\dfrac{15}{77.94 }\\\\n=0.19\ mol[/tex]

So, there are 0.19 g/mol. Hence, the correct option is equal to 0.19 mol.

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