Answer with proper significant figure: 27.0 + 14.369 O A. 41.369
O B. 41.37
O C. 41.4
O D. 41

How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.