2C2H6+7O2=4CO2+6H2O how many moles of oxygen are needed to produce 9 moles of water

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

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?