La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Ac Th Pa U Np...

Question

Question

Answer 1

Answer #1

ANSWER- 2.12 M

Solution-

Molarity = moles of solute / liters of solution

In our case, solute is calcium hydroxide,

Moles of calcium hydroxide = mass / molar mass of calcium hydroxide

Mass = 78.5 grams

Molar mass ≈ 74.1 g/mol

Moles = 78.5 / 74.1 = 1.06 moles

Volume = 500mL = 0.5 L

Molarity = 1.06/0.5 = 2.12 M

Hope this helps :)

Answer 2

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