Question

The molar mass of NaOH is 40.00 g/mol. If 5.20 g NaOH are dissolved in 0.500 L of solution, what is the molarity of the solution? Use mc009-1.jpg. 0.0125 M 0.260 M 3.85 M 7.69 M

Answer 1

B

Step-by-step explanation:

edg 2020

Answer 2

Formulas:

1) M = n / V (in liters)

2) n = mass in grams / molar mass

Data:

Molar mass = 40.0 g/mol

mass = 5.20 g

V = 0.500 liter

Solution

n = 5.20 g / 40.00 g / mol = 0.13 mol

M = 0.13 mol / 0.5 liter = 0.260 M

Answer: 0.260 M