A 250. mL sample of oxygen is collected over water at 25C and 760.0 torr pressure. What is the pressure of the dry gas alone ? ( vapor pressure of water at 25C=23.8 torr) .Ignore units but use the proper number of significant figures .

An aqueous solution of hydroiodic acid is standardized by titration with a 0.186 m solution of calcium hydroxide. if 26.5 ml of base are required to neutralize 20.3 ml of the acid, what is the molarity of the hydroiodic acid solution? m hydroiodic acid

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.