If a 1900 L container has 75 moles of helium at STP, how many moles of CO2 would fill the same container at STP?

‘which reaction would most likely require the use of an inert electrode?

How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?

You wish to prepare a buffer consisting of acetic acid and sodium acetate with a total acetic acetate plus acetate concentration of 250 mm and a ph of 5. what concentrations of acetic acid and sodium acetate should you use