Question
Asked Dec 4, 2019
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Calculate the number of moles present in the 48.4 g of a KCl sample.

A)Number of moles of KCl
is 0.130.
B)Number of moles of KCl
is 0.649.
C)Number of moles of KCl
is 3.25.
D)Number of moles of KCl

is 6.49.

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Expert Answer

Step 1

The number of moles of a given species in the given sample is calculated by the expression (1). In this expression, m represents the given mass and M represents the molar mass of the species.

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т п 3D п: M (1)

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Step 2

The number of moles of KCl in the gi...

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48.4 g п 3 74.55 g/mol = 0.649 mol

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