Chemistry, 21.01.2021 19:00 Richelleypinelley
The validity of scientific theories and laws depends on evidence. Which of the following statements of evidence supports a law rather than a theory?
Electrons orbit the nucleus of an atom within a certain radius.
DNA analysis reveals that a modern species is related to an extinct species.
Seafloor spreading occurs at a rate of three centimeters per year in the mid-Atlantic.
The amount of matter in a closed system is the same at the start of a reaction as at the end of the reaction.
Answers: 3
Chemistry, 22.06.2019 04:00, mgnbrnne
Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.
Answers: 2
Chemistry, 22.06.2019 19:50, ellycleland16
Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+
Answers: 1
Chemistry, 22.06.2019 23:50, datboyjulio21
Which scientists contributed to the determination of how cfcs in clouds in the upper atmosphere could destroy ozone molecules
Answers: 1
The validity of scientific theories and laws depends on evidence. Which of the following statements...
English, 26.02.2021 20:30
Social Studies, 26.02.2021 20:30
Mathematics, 26.02.2021 20:30
Arts, 26.02.2021 20:30
English, 26.02.2021 20:30