how to do this CHEMISTRY MOLARITY problem?

Layla

New member
A solution is prepared by dissolving 516.5 mg of oxalic acid (C2H2O4) to make 100.0 mL of solution. A 10.00 mL portion is
then diluted to 250.0 mL. What is the molarity of the final solution?

answer is 0.812M
 
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