A lungful of air (339 cm3 ) is exhaled into a
machine that measures lung capacity. If the
air is exhaled from the lungs at a pressure
of 1.61 atm at 43.6
◦C but the machine is at
ambient conditions of 0.958 atm and 23 ◦C,
what is the volume of air measured by the
machine?
Answer in units of cm3
.

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1: