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

AI Thread Summary
The discussion focuses on calculating the percent of salt by weight in Mono Lake, where the salt content is 51.3 grams per liter at a water level of 6417 feet above sea level. The initial calculation incorrectly adds the water level in feet to the salt content in grams, leading to confusion. The correct approach involves recognizing that one liter of water weighs 1000 grams, making the total mass 1051.3 grams when adding the salt. The resulting calculation shows that the salt concentration is approximately 4.87 percent by weight, confirming that Mono Lake qualifies as a salt lake. The conversation highlights the importance of proper unit handling in such calculations.
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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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