What is milliliter the same as?

Is 9 correct? and can someone me with 10? it’s due tomorrow, you

Find the midpoint of a segment with endpoints of 4-3i and -2+7i

What sources of error may have contributed to the percent yield not being 100 percent? think about things that may have led to inaccurate measurements or where mass of the product could have been lost if this experiment was conducted in a physical laboratory.