We're being asked to determine the mass of Na2SO4 needed to be added to 175 mL of water in order to make a 0.55 m solution
Recall that molality can be calculated as:
We can calculate for the mass of a Na2SO4 using a dimensional analysis with proper conversion and using the molar mass and density provided.
How many grams of Na 2SO4 (142.05 g/mol) should be added to 175 mL of water to prepare a 0.555 m solution of Na 2SO4? Assume the density of water is 1.00 g/mL.
a. 201 g
b. 55.2 g
c. 13.8 g
d. 91.2 g
e. 54.2 g
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