PLS HELP!! What was the rate of increase of N O from 1900 to 2004 per year? If the amount of N2O continues to increase at
this rate, what will the level be in 2024

Scientist wants to react a barium chloride salt with an acid. to speed up the reaction, the scientist crushes the barium chloride salt until it is a fine powder. this speeds up the reaction by a. increasing the ph of the salt. b. increasing the surface area of the salt. c. increasing the pressure of the salt. d. increasing the temperature of the salt. im thinking more a not 100% sure

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

Molecular iodine, i2(g), dissociates into iodine atoms at 625 k with a first-order rate constant of 0.271 s−1. part a part complete what is the half-life for this reaction?