Which of the following statements about asteroids is true? a. asteroids vary greatly in size and are mostly made up of frozen water and gas. b. asteroids vary greatly in size and are mostly made up of stone, iron and nickel. c. asteroids are all very large and are mostly made up of stone, iron and nickel. d. asteroids are all very large and are mostly made up of frozen water and gas. reset submit

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).

What is the value of keq for the reaction expressed in scientific notation?

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?