Cara Marie M. answered 12/27/18
Professional Tutor for Advanced Math, Science and MCAT!
For this question, we need to add the volumes:
0.351 mL + 0.350 mL + 0.349 mL = 1.050 mL
Note that I added a zero after the 1.05 to be consistent with the 3 significant figures after the decimal point.