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| Topic: |
Science
|
| Number of pages / Number of words: |
4 / 1059 |
Essay's paper body
They were converted the following way(7):
Equation 3
31.17mg/L*1l/1000g of water=31.17mg/1000g=31.17 parts per million
Table 2
Place Ca2+ Concentration Mg2+ Concentration
Hamilton Hall(7) 31.17ppm 21.50ppm
Bigler Hall(8) 47.06ppm 27.88 ppm
University Towers(9) 44.88ppm 22.54ppm
Heritage Oaks(10) 23...
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This was reached by using the equation below:
Equation 4(3)
((31.17ppmCa2+)*2.5ppmCaCO3)+((21.50ppmMg2+)*4.12ppm CaCO3=166.5ppm total hardness
Table 3
Place Total Hardness
Hamilton Hall(7) 166.5ppm
Bigler Hall(8) 232.5ppm
University Towers(9) 205.1ppm
Heritage Oaks(10) 128.1ppm
Results for the EDTA titration were as follows
Place Total Hardness
Hamilton Hall(7) 240ppm
Bigler Hall(8) 480ppm
University Towers(9) 310ppm
Heritage Oaks(10) 200ppm
These values were reached by serial titration in the case of the Hamilton Hall water reached in this manner(1):
Equation 4
Molarity of EDTA*Volume of EDTA=Molarity of Ca2+*Volume of Ca2+
2*10^-4M*12=X=...
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