If 0.251moles of H2O gas are produced, how many liters of oxygen gas was used?
___H2(g) + ___O2(g) ___H2O(g)

(use equation above) If 5.50liters of hydrogen is used to make water, how many grams of oxygen should be used also?

If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5

Fred is studying a substance that is made out of only one element. this means that

A1.50-liter sample of dry air in a cylinder exerts a pressure of 3.00 atmospheres at a temperature of 25°c. without changing the temperature, a piston is moved in the cylinder until the pressure in the cylinder is reduced to 1.00 atmospheres. the volume of the gas is