Meteorologists use weather balloons to carry weather instruments high into the atmosphere. When it is first released at Earth’s surface, a weather balloon typically appears underinflated. What happens to the balloon’s volume as it rises into the atmosphere? Explain your answer in terms of pressure.

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.