Which pair of substances have the same empirical formula? CH4, C3H12
H20, H202
C12H22011, C6H1206
CO, CO2
SO2, H2SO4

How are isotopes of the same chemical element alike? how are they different?

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 concentration affect reaction rate