PRACTICE 2-5 Determine the mass of sodium sulfate (in grams) dissolved in 2.00 L of a 8.12 M sodium sulfate solution. mantally "preparing"

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PRACTICE 2-5
Determine the mass of sodium sulfate (in grams) dissolved in 2.00 L of a 0.12 M
sodium sulfate solution.
A clearer understanding of molarity can be gained by mentally “preparing"
a solution. Follow along visually in Figure 2-19 as you study this paragraph.
Consider the preparation of 250.0 mL of 0.0100 M potassium permanganate
solution. First, you determine the mass of solute needed:
0.0100 molKMnO,
158.04 g KMNO,
250.0 mL
1000 mL
molKMnO,
= 0.395 g KMNO,
%3D
Now weigh out the 0.395 g KMNO, into a 250-mL volumetric flask
(Fig. 2-19(1]). Add less than 250 mL of water to the flask. After dissolving the solute
Transcribed Image Text:PRACTICE 2-5 Determine the mass of sodium sulfate (in grams) dissolved in 2.00 L of a 0.12 M sodium sulfate solution. A clearer understanding of molarity can be gained by mentally “preparing" a solution. Follow along visually in Figure 2-19 as you study this paragraph. Consider the preparation of 250.0 mL of 0.0100 M potassium permanganate solution. First, you determine the mass of solute needed: 0.0100 molKMnO, 158.04 g KMNO, 250.0 mL 1000 mL molKMnO, = 0.395 g KMNO, %3D Now weigh out the 0.395 g KMNO, into a 250-mL volumetric flask (Fig. 2-19(1]). Add less than 250 mL of water to the flask. After dissolving the solute
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