Question

You have 100 grams of potassium fluoride (KF) .

How many moles do you have?


1.00 mol


1.50 mol


1.72 mol


3.57 mol

Answer 1

1.72 mol

Step-by-step explanation:

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Answer 2

Option C = 1.72 mol

Step-by-step explanation:

Given data:

Mass of KF = 100 g

Moles of KF = ?

Solution:

First of all we have to calculate the molar mass of KF.

Molar mass of KF = 39.0983 g/mol + 18.998403 g/mol

Molar mass of KF = 58. 0967 g/mol

Formula:

Number of moles = mass/molar mass

Number of moles = 100 g/ 58.0967 g/mol

Number of moles = 1.72 mol