A 230mL sample of a 0.276 M CaCl2 solution was left on a hot plate overnight; the following morning, the solution is 1.10 M. What volume of water evaporated from the 0.276 M CaCl2 solution?© BrainMass Inc. brainmass.com October 24, 2018, 6:20 pm ad1c9bdddf
This solution provides a brief explanation for finding moles and using this information to calculate volume.
Residence Time of Water
A stable and highly soluble pollutant is dumped into a lake at the rate
of 0.19 tonnes per day. The lake volume is 2E7 m3 and
the average water flow-through rate is 8E4 m3 per day. Ignore evaporation
from the lake surface and assume the pollutant is uniformly mixed in the lake.
What eventual steady-state concentration will the pollutant reach (in ppm)?
Hint: Calculate residence time of water in lake. Multiply by pollutant input rate.View Full Posting Details