For the chemical reaction Ca (s) + ½ O₂ (g) → CaO (s) ∆H° = -635 kJ/mol.

What is the enthalpy (in kJ/mol) for the reaction
2 CaO (s) → 2 Ca (s) + O₂ (g)?

How many orbitals does the p sub shell container

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer