posted by erica on .
A solution is made by dissolving 811.0 cg of barium hydroxide, Ba(OH)2, in 0.1137 kg of water. What is the concentration in parts per million?
I know the equation is:
ppm= (mass of solute/mass of solution)10^6
Does the mass need to be in g or kg?
Convert 811 cg to kilograms
811.0 cg = 811.0/100 g = 8.110/1000 kg
Then use formula to calculate concentration in ppm.
Keep the answer to 4 significant figures.
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