For the reaction below, estimate the enthalpy of reaction in kJ/mol using the table of bond enthalpies.
propane (CH3-CH2-CH3) --> ethene (CH2=CH2) + methane (CH4)

Esign techniques and materials that reduce the negative environmental impact of a structure are referred to as

Ted and emily played a mixed doubles tennis match against jack and brenda. in the second match. ted and brenda played against jack and emily. which type of chemical reaction does the situation demonstrate?

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.