What is the pH of a solution with [H+] = 7.0 x 10^-2?

How air particles exert a pressure on the inside of the balloon

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.