In today's experiment, you will be recrystallizing a "dirty" sample of benzoin. choose the statement that best explains how you will determine your sample?
a. the yield of my product is high
b. the appearance of the product matches the literature description
c. the melting point range should be less than 3 c
d. the melting point range matches the literature values.

The melting point range matches the literature values.

Explanation:

The essence of recrystallization is obtaining the sample in its purest form. This purest form must have the exact properties of the compound as reported in literature. The melting point is part of the means of identifying a pure compound. A pure compound must have a sharp melting point which corresponds with literature reports. Hence the melting point is quite a good means for determining a sample.

i think is conclusions.i think so

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.