A mixture of gases with a pressure of 800 mm HG contains 10% oxygen and 90% nitrogen by volume. What is the partial pressure of the oxygen gas in the mixture!

In the reading, yao chen-yuan describes traveling to deliver a message. why was he willing to risk danger to travelto tientsin? he wanted to the boxers with their cause

Ab c or d ? i’m not sure what the answer is

What kind of intermolecular forces act between a hydrogen fluoride molecule and a hydrogen peroxide molecule? note: if there is more than one type of intermolecular force that acts, be sure to list them all, with a comma between the name of each force.