Read the volume of fluid in the graduated cylinder above. 68 ml 68.0 ml 69 ml 69.0 ml

Attached is the picture of the graduated cylinder.

You have to take into account two things to reply the question:

1) The lecture is given by the meniscus, which leads you to read 69.

2)  The number of significative figures: the last significant figure reported is uncertain, so the number is reported as 69.0, that means that the reading is 69 plus or minus an error.

69.0 mL

Ionic compounds dissociate into component ions dissolved into a solution creating substances called "electrolytes".hope my answer has you : )