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Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

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?