Areal object is -20 cm from the first focal point of a system consisting of two thin lenses and produces a real image 45 cm from the second focal point. if the focal length of the first lens is +12.5 cm, and the lenses are separated by 4 cm, find the power of the second lens. x--02d m t1ー /t. r25=-8.dd d f=±0.3d m, and sw. tis system -637 d r.- fenutbe positive

Calculate the ratio of h+ ions to oh– ions at a ph = 6. 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 = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1