What is the Percent of Salt by Weight in Mono Lake at Different Water Levels?

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Homework Help Overview

The discussion revolves around calculating the percent of salt by weight in Mono Lake at a specified water level, focusing on the salt content in grams per liter and the weight of water. Participants are examining the implications of the given data and the method of calculation.

Discussion Character

  • Mathematical reasoning, Assumption checking

Approaches and Questions Raised

  • Participants are attempting to calculate the percentage of salt by weight using the provided salt content and water weight. Questions arise regarding the mathematical steps taken, particularly the addition of water level and salt content, and the relevance of elevation on the calculation.

Discussion Status

There is a mix of attempts to clarify the calculation process and questions about the assumptions made in the original posts. Some participants are questioning the validity of the calculations and the relevance of certain data points, while others are seeking to ensure clarity in the method used.

Contextual Notes

Participants note the importance of showing units in calculations and the potential impact of elevation on the physical properties of the water, though the relevance of these factors to the problem is under discussion.

punky92
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High School Geometry

Homework Statement



When the concentration of salt in a lake is greater than three percent by weight, the lake is a salt lake.

Find the percent of salt by weight for each of the water levels of Mono Lake Shown in the table. One liter of water weighs 1kg or 1000 grams.

Water level (Feet above sea level) 6417
Salt Content (grams per liter) 51.3


Homework Equations



Unknown

The Attempt at a Solution



6417+51.3 = 6468.3
51.3/6468.3 = 0.0079309
0.0079309 * 100 = 79%
Thanks
 
Last edited:
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Homework Statement



When the concentration of salt in a lake is greater than three percent by weight, the lake is a salt lake.

Find the percent of salt by weight for each of the water levels of Mono Lake Shown in the table. One liter of water weighs 1kg or 1000 grams.

Water level (Feet above sea level) 6417
Salt Content (grams per liter) 51.3

Homework Equations




The Attempt at a Solution



6417+51.3 = 6468.3
51.3/6468.3 = 0.0079309
0.0079309 * 100 = 79%
Thanks
 
This is relatively simple. If there are 51.3 grams per litre of water, then how will you work out the percentage? What is the mass of 1 litre of water?
 
0.0079309 * 100 = 79%
? Please check your math.

One should show units in the equations.

Why 6417+51.3 = 6468.3. 6417 feet + 51.3 g/l makes no sense.

The elevation would affect pressure at the surface of the water, but is that relevant?

Mono Lake - http://en.wikipedia.org/wiki/Mono_Lake
Average depth: 17 m (57 ft)
Max depth: 48 m (159 ft)


If one simply take 1 liter and assumes little change in volume with the 51.3 g of salt then,

1 liter has 1000 g of water and 51.3 g of salt, so . . . .

What is the volume of the salt?
 
Seems he's double posted. Here is the other thread: https://www.physicsforums.com/showthread.php?t=183876
 

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