Respuesta :
The molarity of a solution containing 104.2 grams of BaCl2 in enough water to make 800 ml of solution is 0.625mol/L.
What is molarity?
Molarity is one of the measures of the concentration in terms of the number of moles of the solute dissolved in particular volume of the solution.
Molarity of BaCl2 can be calculated by,
Molecular mass of BaCl2 is 208.23gmol^-1
Number of moles = mass / molecular mass = 104.2g / 208.23gmol^-1 = 0.50mol.
Molarity = Number of moles / volume = 0.50mol / 0.8L = 0.625mol/L.
Therefore, molarity of a solution containing 104.2 grams of BaCl2 in enough water to make 800 ml of solution is 0.625mol/L.
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