Given the equation: 4 AlCl3(s) + 3 O2(g) ––> 2 Al2O3(s) + 6 Cl2(g) ; ΔH° = –529.0 kJ What is ΔH° for the equation- Cl2(g) + 1⁄3 Al2O3(s) –––> 2⁄3 AlCl3(s) + 1/2 O2(g)

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

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.