Asealed container has 1 mole of helium and 2 moles of nitrogen at 30dc when the total pressure of mixture is 0.60 atm what is the partial pressure of the nitrogen?

What element breaks down into yttrium-90?

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

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