A flask contains a mixture of nitrogen and oxygen gases at STP. If the partial pressure of the nitrogen is 40.0 kPa, then what is the partial pressure of the oxygen?

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

Many ionic compounds and a few highly polar covalent compounds are because they completely ionize in water to create a solution filled with charged ions that can conduct an electric current.