myabean365
contestada

0.25 grams of magnesium chloride are dissolved to make 50 milliliters of solution. What is the molarity of the solution?

Respuesta :

superman1987
when the molarity  = moles / volume 

so, we need to get the moles of MgCl2:

when moles = mass / molar mass 

so, by substitution:

∴ moles = 0.25g / 95.211g/mol

            = 0.0026 moles

∴`the molarity = 0.0026 / 0.05L

                       = 0.052 M 

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