A line contains the points (-3,-9) and (4,5). What is the point-slope form of the line? A. y+9 = -2(x+3)
B. y - 5= 3(x - 2)
C. y - 9 = 2(x+3)
D. y+9= 2(x+3)

What is the ph of a solution with a concentration of 5.2 × 10–8 m h3o+?

Both josef loschmidt and amedeo avogadro contributed to our understanding of basic molecular numbers, sizes, and reaction ratios. neither scientist discovered “avogadro’s number” in the form we use it today (6.02 x 10 23). still, there’s a controversy over the name. research the contributions from these two scientists and read about how avogadro’s number got its name. briefly state what you think this number should be called, providing key details of each scientist’s contributions to this concept and a solid rationale for your case in naming the number.

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?