1, Calculate the sodium ion concentration when 7.00 mL of 3.0 M sodium carbonate is added to 30.0 mL of 1.0 M sodium carbonate.
2, A standard solution is prepared for the analysis of fluoxymesterone ( C20H29FO3), an anabolic steroid. A stock solution is first prepared by dissovling 10.0 mg of fluoxymesterone in enough water to give a total volume of 500.0mL. A 100.0 microL aliquot ( portion) of this solution is dilutes to a final volume of 100.0mL. Calculate the concentration of the final solution in terms of molarity