try: Hw11-Ch9 MasteringChemistry: Hw11-Ch Hw11-Ch9 Problem 9.45 Express your ans

Question

try: Hw11-Ch9 MasteringChemistry: Hw11-Ch Hw11-Ch9 Problem 9.45 Express your answer with the appropriate units Problem 9.45 Calculate the grams of solute needed to prepare each of the following MassValue Units My Answers Give Up Submit Incorrect; Try Again; 4 attempts remaining Part B 5.00 L of a 0250 MKCI solution Express your answer with the appropriate units Mass Value Units Submit My Answers Give Up Part C 20.0 mL of a 5.00 M HCI solution Express your answer with the appropriate units. Submit My Answers Give Up

Explanation / Answer

Part B:

Molarity of solution is given by, M = no. of moles/Vol. of solution(L)

Given that, M = 0.250 M and volume = 5.00 L

No. of moles of solute = MxV = 0.250x5.00 = 1.25 moles

Mass od KCl solute = molesxmol.wt = 1.25x74.55 = 93.18 grams

Part C:

Given that, M = 5.0 M and volume = 5.00 mL = 0.005 L

No. of moles = MxV = 5.0*0.05 = 0.025 moles

Mass of HCl solute = molesxmol.wt = 0.025x36.5 = 0.91 grams

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