What is the pH of a 0.0840 M aqueous solution of Ba(OH)2 ?

Why did southern business leaders want to increase the number of slaves

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.