Chemistry, 20.07.2019 10:00 lorrainelopez
Calculate the ph of a 0.021 m nacn solution. [ka(hcn) = 4.9 10–10]
Answers: 1
Chemistry, 20.06.2019 18:02
Which of the following provides support and protection for many insects a) muscle b) skeleton c) spinal cord d) exoskeleton
Answers: 2
Chemistry, 22.06.2019 06:30
Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?
Answers: 1
Chemistry, 22.06.2019 09:40
Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.
Answers: 3
Calculate the ph of a 0.021 m nacn solution. [ka(hcn) = 4.9 10–10]...
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