If you had done the experiment hands-on and the environmental air pressure changed, how would your results have been affected? Question 3 options:

There is not enough information to make a decision.

There would have been no effect, because air pressure changes would not be strong enough to change the lab results.

There would have been a change in the measurements of balloon volume because air pressure changes would have interfered with the results.

PLEASE HELP!!!

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.