Every Thursday, Rico and Jessica play bingo with 10 residents of a retirement home. Rico is 14 years old and Jessica is 15 years old. The ages of the 10 other bingo players are: 75, 81, 82, 68, 88, 87, 68, 93, 84, and 73. What is the range of the bingo players' ages?

c is the answer because when something is left after something evaporates that shows the chemical change.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

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