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Chemistry, 19.08.2019 01:30, jokerr6323
Scientific models can be used for a variety of different purposes. which of the following statements about scientific models is not true?
a scientific models can save money and lives.
b. scientific models allow scientists to test their predictions.
c. scientific models allow scientists to study systems that no longer exist.
d. scientific models are used rarely
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Answers: 2
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8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm
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Chemistry, 22.06.2019 18:30, rosie20052019
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Chemistry, 22.06.2019 19:20, evansh78
Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?
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Scientific models can be used for a variety of different purposes. which of the following statements...
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