PLEASE HELP ME. I NEED THE ANSWER SOON. SHOW ALL YOUR STEPS, ON PAPER IF POSSIBLE. A 5.00 g sample of borax (sodium tetraborate decahydrate, Na2B4O7 * 10H2O) was thoroughly heated to remove all the water of hydration. What mass of anhydrous sodium tetraborate remained? [5]

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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