Write a balanced chemical equation for the reaction of aqueous sodium carbonate with aqueous barium chloride to form solid barium carbonate and aqueous sodium chloride.

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?