16.2 g of MgS are dissolved in water. If the volume of the solution is 250.0 mL, what is the concentration of the solution? Report your answer in units of molarity.
Question
16.2 g of MgS are dissolved in water. If the volume of the solution is 250.0 mL, what is the concentration of the solution? Report your answer in units of molarity.
Solution
To calculate the molarity of the solution, we need to follow these steps:
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Convert the mass of MgS to moles. The molar mass of MgS (Magnesium Sulfide) is approximately 56.38 g/mol. So, the number of moles of MgS is 16.2 g / 56.38 g/mol = 0.287 moles.
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Convert the volume of the solution from mL to L. 1 L = 1000 mL, so 250.0 mL = 0.250 L.
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Calculate the molarity of the solution. Molarity (M) is defined as the number of moles of solute per liter of solution. So, M = 0.287 moles / 0.250 L = 1.148 M.
So, the concentration of the solution is 1.148 M.
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