Respuesta :

TheLazyNobita

Answer:

Gram molecular mass = 40 + (35.5)2 = 111g

Mass of [tex]CaCl_2[/tex] in 1 mole = 111g

Mass of [tex]CaCl_2[/tex] in 0.15 mole = 111 × 0.15 = 16.65 g

The mass of CaCl₂ which are necessary to make a 0.15M solution is 16.65 grams.

What is molarity?

Molarity is any solution is define as the number of moles of solute present in per liter of solution as;

M = n/V

Given that molarity of CaCl₂ solution = 0.15M

Let the volume of the solution = 1 L

So, moles of the CaCl₂ = 0.15 mole

Relation between the mass and moles of any substance will be represented as:

  • n = W/M, where
  • W = required mass = ?
  • M = molar mass = 111 g/mol

On putting all values on above equation, we get

W = (0.15)(111) = 16.65 g

Hence required mass of CaCl₂ is 16.65g.

To know more about molarity, visit the below link:

https://brainly.com/question/26528084

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