The following results are the obtained in an experiment to determine the formula of an oxide of Silicon? Mass of crucible = 15.20g Mass of crucible + silicon=15.48g Mass of cruicible + oxide of silicon = 15.80g Find the empirical formula of oxide of Silicon.

Which type of stress results when two plates push against one another? a. compression b. tension c. force d. shear

If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?

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.