Question: 1 2 3 Initial 4.97 6.06 7.13 Final 36.06 37.13 38.20 Titer 31.09 31.07 31.07 In a titration experiment, 25mL of lake sample containing H2SO4

	1	2	3
Initial	4.97	6.06	7.13
Final	36.06	37.13	38.20
Titer	31.09	31.07	31.07

In a titration experiment, 25mL of lake sample containing H2SO4 was taken, and concentration of 0.15 M of NaOH is used as the standard solution. To neutralize the sulfuric acid in a 54 km^3 lake, I have calculated that we need 2.8 x 10^3 Kg of CaO.

Please determine the uncertainty in the estimate of the amount of lime. Start with the uncertainty in the average of the three measurements Standard error of the Sample. Assume all the other errors are insignificant compared to that and just propagate that forward to get an uncertainty in the amount of lime you need to add.

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