previous 11 of 1 Mass percent (m/m) -the mass of the solute in grams for exactly
ID: 552716 • Letter: P
Question
previous 11 of 1 Mass percent (m/m) -the mass of the solute in grams for exactly 100 g of solution Volume percent (vlv-the volume of solute in exactly 100 mL of solution Mass/volume percent (m/v)- the mass of solute in grams for exactly 100 mL of solution Molarity (M) the number of moles of solute in exactly 1 L of solution Part A e the mass percent (m/m) of a solution prepared by dissolving 54 62 g of NaCl in 179.8 g of H2O Express your answer to four significant figures Hints Mass percent (m/m)- Submit My Answers Give Up Part B Vinegar is a solution of acetic acid in water I a 305 ml bottle of Express your answer to three significant figures Hints distiled vinegar contains 27.1 mL of acetic acid, what is the volume percent (vv) of the Volume percent (v/v) Submit My Answers Give UpExplanation / Answer
A)
mass % m/m given
% NaCl = mass of NaCl / Total mass * 100%
total mass = 179.8 + 54.62 = 234.42 g
% NaCl = 54.62/234.42*100
% NaCl = 23.30
B)
V = 305 mL of soln
V = 27.1 mL of acid
% V/v = Vacid / Vsolution *100 = 27.1 / 305 *100 = 8.885 %
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