Which of these statements is true?
(a)All spontaneous reactions have a negative enthalpy chan...
Chemistry, 18.04.2020 20:46, sanchezr7187
Which of these statements is true?
(a)All spontaneous reactions have a negative enthalpy change
(b)All spontaneous reactions have a positive entropy change
(c)All spontaneous reactions have a positive free-energy change
(d)All spontaneous reactions have a negative free-energy change
(e)All spontaneous reactions have a negative entropy change
Answers: 2
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Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.
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Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.
Answers: 1
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Answers: 3
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