A 15.0 L flask contains 15. 0 g of O2 gas, 25.0 g of H2O gas and 10.0 g of N2 gas at 30.00C. What is the partial pressure of each gas in atm? What is the total pressure in the flask?

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.

How does a large body of water, such as the ocean, influence climate?

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy