A mixture of four gases exerts a total pressure of 715 mm Hg. Gases A and B each exert 110 mm Hg. Gas C exerts 450 mm Hg. What pressure is exerted by gas D?

Why are people not able to scuba dive in the deep part of the ocean

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?

Water undergoes a large change in density at 0 ∘ c as it freezes to form ice. calculate the percent change in density that occurs when liquid water freezes to ice at 0 ∘ c given that