2.1 The reaction of nitrogendioxide and carbonmonoxide in the gas state to form carbondioxide and nitricoxide is represented by the equation on the figure: What are solutions of questions on the figure?

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

What is the mass of 0.46 mol of mgcl2

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)