Asked by Wiped Out
The concentrations of Ca and Na in a sample of river water are 13.4 mg/kg and 5.2 mg/kg. Express the concentration in molality
Answers
Answered by
Jason
Molality id defined as (moles of a solute)/(kg of solvent). So the concentration of Ca in the river water would be (13.4 mg/kg) * (1/1000 g/mg) * (1/40.078 mol/g) = 3.34 x 10^-4 mol/kg
The key to solving any concentration problem is knowing what units you're starting with and what units you want to end with. I'll leave the Na for you to solve, but the solution is essentially the same. Try to make sure your units cancel out to the proper unit at the end.
The key to solving any concentration problem is knowing what units you're starting with and what units you want to end with. I'll leave the Na for you to solve, but the solution is essentially the same. Try to make sure your units cancel out to the proper unit at the end.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.