Which is the expected outcome of adding a catalyst to a chemical reaction? a. the reaction will speed up b. chemical equilibrium will not be reached c. the reaction will slow down. d. no change will occur

Initially, the balloon had 3.0 liters of gas at a pressure of 400 kpa and was at a temperature of 294 k. if the balloon is cooled to 277 k and its volume decreased to 1 l, what will the new pressure in the balloon be?

What is the name of this hydrocarbon?

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system