Which statement describes all chemical changes, but not all physical changes?
Bubbles are prod...
Chemistry, 05.05.2020 08:12 jeffro198004
Which statement describes all chemical changes, but not all physical changes?
Bubbles are produced.
A new substance forms.
Phase changes occur.
A color change occurs.
Answers: 3
Chemistry, 22.06.2019 04:00
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 13:00
Which of the following are good traits of a hypothesis? it will be able to be testedit can predict an outcomeit will explain the observationsall of these
Answers: 2
Chemistry, 22.06.2019 13:30
Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering
Answers: 1
Mathematics, 13.03.2020 02:29
Mathematics, 13.03.2020 02:29
English, 13.03.2020 02:29
Physics, 13.03.2020 02:29
History, 13.03.2020 02:29
Mathematics, 13.03.2020 02:29
Biology, 13.03.2020 02:29
Mathematics, 13.03.2020 02:29
Health, 13.03.2020 02:29
Social Studies, 13.03.2020 02:29
Biology, 13.03.2020 02:29