Chemistry, 20.07.2019 04:00 cbonner191
Which definition best describes a buffer? a. a substance in a solution that captures hydrogen ions and raises the ph b. a substance in a solution that releases hydrogen ions and lowers the ph c. a substance in a solution that releases and captures hydrogen ions, keeping the ph the same d. a substance in a solution that changes color in a narrow range of ph?
Answers: 1
Chemistry, 22.06.2019 15:00
20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?
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Chemistry, 22.06.2019 15:20
Identify arrows pointing to bonding electrons. done h-0-0-h ) intro
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Chemistry, 22.06.2019 20:20
Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .
Answers: 3
Chemistry, 23.06.2019 05:00
Scientists discovered fossils in several layers of the earth you see here. they found fossils of algae, snails, and clams in layer d. given that information, where do you think they found fossil evidence of simple land plants and amphibians?
Answers: 1
Which definition best describes a buffer? a. a substance in a solution that captures hydrogen ions...
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