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This is another way of determining concentration. This is used for very small concentrations of particles in solutions. think about this; 1ppm = 1 inch in 16 miles As for solution ppms:
This is really just a plug and chug problem. What is the concentration of a solution, in parts per million, if 0.02 gram of NaCl is dissolved in 1000. grams of solution?
Then June 2007, New York State threw this curveball. Most students lost 1 of the 2 points on this one. 66. An aqueous solution has 0.0070 gram of oxygen dissolved in
1000. grams of water. In the space
Answer-The equation above reads "grams of solution", you had to add the solute to the solvent in the denominator. Even though mathematically it didn't change a thing. It is technically wrong not to add the solute and solvents together to determine the mass of solution.
YOU HAVE BEEN WARNED Here was another one, but it was a multiple choice.
Jan 2006- 39. If 0.025 gram of Pb(NO
And another..and another..and yet another.
June 2005-42 What is the concentration of a solution, in parts
per million, if 0.02 gram of Na
June 2008-38 What is the concentration of O
June 2009-36 What is the total mass of solute in 1000. grams of
a solution having a concentration of 5 parts per million?
Jan 2008-38
What is the concentration of O
Aug 2010-15
Which unit can be used to express the concentration of a solution?
on to Molality or Colligative Properties back to Math of Chemistry Links |