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What is the molarity of a solution made with 128 grams of magnesium chloride dissolved in one liter of water?
Wiki User
∙ 11y ago
Molarity= moles/Liters
To change grams to moles you divide by the mole weight which is listed on the Periodic Table.
Mol= grams/mol weight
The Mole weight of Magnesium Chloride is 59.8 grams/mol
Mol=128g/59.8
Mol=2.14
Now, you put the number of moles and Liters into the equation
Molarity=2.14 mol/1L
Molarity=2.14
So, the molarity is 2.14 M
Wiki User
∙ 11y ago
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