Anonymous
Anonymous asked in Science & MathematicsChemistry · 5 months ago

# calculate the percentage of Lake Parsons which has evaporated since it became isolated?

A geochemist measures the concentration of salt dissolved in Lake Parsons and finds a concentration of 13.12 g·L ^−1. The geochemist also measures the concentration of salt in several nearby non-isolated lakes, and finds an average concentration of 5.6 g·L ^−1

Assuming the salt concentration in Lake Parsons before it became isolated was equal to the average salt concentration in nearby non-isolated lakes, calculate the percentage of Lake Parsons which has evaporated since it became isolated.

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• 5 months ago

The amount of salt has remained the same.

13.12 * V[1] = 5.6 * V[2]

V[1] / V[2] = 5.6 / 13.12

V[1] / V[2] = 560/1312

V[1] / V[2] = 70 / 164

V[1] / V[2] = 35/82

V[1] / V[2] = ‭0.4268292682926829268292682926829....

The lake is now at 42.7% of its original volume.

1 - V[1]/V[2] =>

‭0.573170731707317073170731707317....

It has lost 57.3% of its original volume