4 Search the web secure http Chapters 9 Assignments Item 10

4 Search the web.. secure http Chapters 9 Assignments Item 10 Part A Calclate the mass percent (mim) of a solution propared by disohing 47 91 g of NaCl in 178 1g of H Express your answer to four signilficant ligures View Availlable Hints Mass percent Part Veeger is a solution of cetic ai in watr o 125 l btte of diled vinegar contns 26 8 ml of acelic acld wht is the volume pencent (y) of thes Expeess your answer to three signiticant igures 2 6 8 a WE

Solution

mass of solution = mass of NaCl + mass of H20

plug in the given values

mass of solution = 47.91 g + 178.1 g

mass of solution = 226.01 g

now

% mass of the solution = mass of NaCl x 100 / mass of solutio

= 47.91 x 100 / 226.01

= 21.2 %

so

the mass percent is 21.2 %

B)

% v/v = volume of acetic acid x 100 / volume fo solution

% v/v = 26.8 ml x 100 / 125 ml

% v/v = 21.4 %