What noble-gas element has the same number of electrons as each of the following ions?
o2-,...
Chemistry, 22.08.2019 11:30 elizaannettem4466
What noble-gas element has the same number of electrons as each of the following ions?
o2-, p3-, ca2+, k+
Answers: 1
Chemistry, 22.06.2019 02:00
Which of the following happens during cell division? (a) energy is created (b) waste is eliminated (c) carbon dioxide is released (d) damaged cells are replaced
Answers: 1
Chemistry, 22.06.2019 02:30
Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh
Answers: 2
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
6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.
Answers: 1
Mathematics, 25.11.2020 04:30
Mathematics, 25.11.2020 04:30
English, 25.11.2020 04:30
Health, 25.11.2020 04:30
English, 25.11.2020 04:30
Biology, 25.11.2020 04:30
Mathematics, 25.11.2020 04:30
Mathematics, 25.11.2020 04:30
Health, 25.11.2020 04:30
Mathematics, 25.11.2020 04:30
Mathematics, 25.11.2020 04:30