Using the data above and the third trial listed below, calculate the average val

Question

Using the data above and the third trial listed below, calculate the average value for all three measurements. Mass of 1^st sample ___g Mass of 2^nd sample ___g Mass of 3^rd sample ___g Average of all 3 samples _____g If the density of water at 19, 5 degree C is 0.99826 g/ml, what is the volume for the above average mass of water. Average as volume of water ___________ If the student was trying to deliver 10.00 mL, what is the % Error for the average value calculated above. Is a positive or negative error? For all three samples, calculate the % difference for this buret.

Explanation / Answer

ans a) volume = mass/ density

= 13.36g / 0.99826 g/ml

= 13.38 ml

ans b) Error = experimental value - known value

= 13.38 ml - 10 ml

= 0.38 ml

relative error = error/ known value

= 0.38 / 10

= 0.038

% error = relative error * 100%

= 0.038 * 100%

= 3.8 %

it is a positive error.

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