An unknown element X has the following isotopes: 126X (22.00% abundant), 128X (34.00% abundant), 130X (44.00% abundant). What is
the average atomic mass in amu of X?

How can you increase the ability of a gas to dissolve in a liquids?

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).

1. list three scientific reasons cockroaches may fly.