Answer:
8.5mL
Step-by-step explanation:
According to the question, a transfer pipette contains 15.23 mL of water. 6.7 mL of water is drawn out of it, this will give :
= 15.23 - 6.7
= 8.53
However, observing the measurements, 15.33mL, which is the initial volume of water in the transfer pipette has 4 significant figures (4 s.f) while the final volume after transference is 6.7 mL, which is in 2 significant figures.
In addition/subtraction, the digit with the lowest number of significant figures will determine the outcome it result.
Hence, 8.53 (3 s.f) will be reported as 8.5 (2 s.f).
Therefore, the final volume is 8.5 mL