Why is it important for scientists to make precise and accurate measurements?

just write a few sentences .

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

How do you lengthen a pattern piece? (family and consumer science, sewing)