Measure the length of the line within the amount of uncertainty.
13 mm
21.5 mm
22 mm
21 mm

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

Will mark brainliest how many electrons can be held in the energy level n = 4?

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit