Mary smith obtained a density of 2.226g/ml for a metal sample. Using a different method, Joseph Henry obtained a value of 2.335g/mL for the same metal sample. Which student’s value is more accurate? Use the definition of accuracy to explain your answer. the true value is 2.300g/ml.

Joseph Henry.

Explanation:

Hello,

In this case, we define the accuracy based on the degree of deviation a measure has regarding the the true or expected value. In this case, the lower the difference, the more accurate the procedure. In such a way, for the two students, we compute the difference between the expected value and the obtained value:

In such a way, since the difference is lower in Joseph's measure, we can say he is the most accurate.

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the movement of aircraft through clouds can even cause lightning strikes. a single lightning event is a "flash", which is a complex, multi-stage explosively ejected.

explanation:

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since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.