The answer is compound. I hope this helps! :)
Answer:
The molarity of a 50.0 mL solution that contains 0.0350 mol of sodium sulfate 0.7 
Explanation:
Molarity is a concentration measure that indicates the amount of moles of solute that appear dissolved in each liter of the mixture.
So, the Molarity of a solution is determined by the expression:

Molarity is expressed in units (
).
In this case:
- Volume=50 mL=0.05 L (1 L= 1,000 mL)
Replacing:

Molarity= 0.7 
<u><em>The molarity of a 50.0 mL solution that contains 0.0350 mol of sodium sulfate 0.7 </em></u>
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The answer to this question should be 10.65 moles of SO2