Question

Calculate the grams of solute needed to prepare each of the following :

Part A.

4.00 L of a 5.00 M NaOH solution

Part B

3.00 L of a 0.200 M KCl solution

Part C

45.0 mL of a 4.50 M HCl solution

Answer 1

If a we are giress with concentration and volume then Concentration no of moles volume (L) - where of moles mass of solute molar mass Concentration mass of solute Paul molar mais molar mass & volume (2) f Naol is gland concenbaliens = 5.00 mot (m) L volume 4.00L using equation Z . 5 mol man of solute Togloot x 4.000 man عل an of solute of solute mass 5 met x log x 4004 boot Qox yo 800 og wherme = 3.000 Part 6 Concentration 0. 200 m molar mass of kee 0. 200 mot 34 x 74.89 usning equation 0 salama of sclete mot man 44.79 Parte to man of man of solute : 4.50 ml x 0.0454 x 36.5g Z That 7.4 Tug

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