Find δh°rxn for the reaction ch4 (g) + 2o2 (g) → co2 (g) + 2h2o (l). [δh°f (ch4 (g)) = - 74.8 kj/mol; δh°f (co2 (g)) = - 393.5 kj/mol; δh°f (h2o (l)) = - 285.5 kj/mol]

Based on the chemical reaction: N2 (g) + 3H2 (g) → 2NH3 (g), which substance takes up the most space?

How to balance chemical equations examples?

Which mixture contains visible particles that settle out unless the mixture is stirred yahoo?

Total mass of H2O2 in 20 grams of an aqueous H2O2 solution

Liquid ammonia boils at - 33.4ºC and has a heat of vaporization of 23.5 kJ/mol. What is its vapor pressure at - 50.0ºC? (R = 8.314 J/K•mol)

When K-37 undergoes positron emission, what is the resulting atom? A) K-37 B) K-38 C) Ar-37 D) Ar-38

Consider the following reaction where Kp = 4.55*10-5 at 723 K: N2 (g) + 3H2 (g) ⇋ 2NH3 (g) a) If the three gases are mixed in a rigid container at 723 K so that the partial pressure of each gas is initially one atm, what will happen?

Which terms are used to identify pure substances? (1) an element and a mixture (2) an element and a compound (3) a solution and a mixture (4) a solution and a compound

Which of the following polyatomic ions will form an ionic compound with two sodium ions? CO32- HCO31- NO21- NO31-

What is hybridisation