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50.0 grams of KCl is dissolved in water to make a 4.00 L
solution. What is the molarity of the solution? (Molar mass of
KCI = 74.5 g/mol) _ M(Round your answer to the
appropriate number of four significant figures)
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Respuesta :

Neetoo

Answer:

Molarity = 0.1678 M

Explanation:

Given data:

Volume = 4.00 L

Mass of KCl = 50.0 g

Molarity = ?

Solution:

Formula:

Molarity = number of moles / volume in L

Number of moles = mass/ Molar mass

Number of moles = 50.0 g/ 74.5 g/mol

Number of moles = 0.8 mol

Molarity = 0.8 mol / 4.00 L

Molarity = 0.1678 M

Answer:

.168

Explanation:

on CK-12 you have to have 3 significant figures so you round it to .168