Question

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)
Enter the answer
Check It

Answer 1

.168

Step-by-step explanation:

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

Answer 2

Molarity = 0.1678 M

Step-by-step 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