Where can i get a oxygen isotope analysis comercialy

Select the correct answer from each drop-down menu. to make a table of the elements, dmitri mendeleev sorted the elements according to their . he then split the list of elements into several columns so that elements beside each other had similar .

Now look at the segment of the graph between the two data points marked with black squares. describe how the boiling point and melting point plots behave between these points. be as specific as possible.

Which of the four hypothetical substances you investigated would be most harmful to living organisms? 50 points!