The Problem: In this experiment you will be given an unknown mixture of sand and

Question

The Problem:
In this experiment you will be given an unknown mixture of sand and salt. The objective is to
separate the sand from the salt to determine percent composition of salt in the unknown. You
will also conduct statistical analysis of your results compared to results obtained by your lab
mates. The statistical analysis should include average value, deviation from average for each data
point, average deviation and relative average deviation.

My Question : Would the results differ with differing amounts of initial mixture used? Why or why not?

Explanation / Answer

yes. the results differ with differing amounts of initial mixture used

example 1)

suppose 10 g of sand present in 100 g of water .

the weight percentage of sand = (10 / 10 + 100) x 100 = 9.09 %

the weight percentage of water = (100 / 10 + 100) x 100 = 90.909%

example 2 )

take initial amount 20 g of sand 100 g water now

the weight percentage of sand = (20 / 20 + 100) x 100 =16.67%

the weight percentage of water= (100/ 20 + 100) x 100 =83.33%

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