Answer :

Explanation:

Just find the value-added of each titration

Final volume - Initial volume = volume added

so for the 1st titre value it will be

16.60-11.80 = 4.8cm^3

for second it will be

16.65-9.75 = 6.9cm^3

to average it add them and divide by the total number of trials

which is 4.8+6.9 =11.7

and then divide by 2

which is 11.7/2 = 5.85 cm^3 of average volume added

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