If you push on a wall with 200n with what forth with the wall push back

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

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.