An opened bottle of milk in a refrigerator stays fresh longer than one at room temperature on a table Assuming that losing freshness is related to a chemical reaction, which statement best explains this event? O The lower temperature inside the refrigerator stops the chemical reaction
O The lower temperature inside the refrigerator reverses the chemical reaction
O The lower temperature inside the refrigerator reduces the rate of the chemical reaction
The lower temperature inside the refrigerator increases the rate of the chemical reaction

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;

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.  

d : a person who learns about the world by observing it. no that is not a smiley face

explanation: