What is the pH of a solution with an OH ion concentration of 9.54E-5?

**Make sure to report your answer to the appropriate number of significant figures.

Who is better, messi or cristiano, i need this for a chemistry class. asap

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

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.