Physics

Physics, 12.07.2019 05:30, joseroblesrivera123

Explain from an atomic viewpoint why charge is usually transferred by electrons?

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Chemistry, 10.07.2019 05:20, tifftiff22

Explain the following variations in atomic or ionic radii, by completing the following sentences: fe > fe2+ > fe3+ 1. the 4s valence electrons in fe are on average from the nucleus than the 3d electrons, so fe is larger than fe2+. 2. because there are five 3d orbitals, in fe2+ at least must contain a pair of electrons. 3. removing one more electron from fe2+ to form fe3+ significantly repulsion, increasing the nuclear charge experienced by each of the other d electrons and decreasing the size of the ion.

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Physics, 26.07.2019 19:30, mitalichavez1

Sam blew up a balloon and rubbed it on his head. then he stuck the balloon on the wall. this was all the result of electrostatics or the transfer of charge. the appearance of negative charge on a balloon is the result of its gaining electrons. and these electrons must come from somewhere; in this case, from sam's hair. electrons are transferred in any charging process. in the case of charging by friction, they are transferred between the two objects being rubbed together. prior to the charging, both objects are electrically neutral and the situation obeys the law of conservation of charge. how does the law of conservation of charge explain sam and his balloon? a) friction creates a charge that collected on the balloon. b) the balloon gained electrons; sam's hair gained protons. c) if the balloon acquires charge, sam's hair loses charge. d) the net charge before is zero; the net charge after is negative.

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Physics, 09.09.2019 21:10, bale4

Aballoon, initially neutral, is rubbed with fur until it acquires a net charge of -0.60 nc. (a) assuming that only electrons are transferred, were electrons removed from the balloon or added to it? (b) how many electrons were transferred?

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Chemistry, 24.09.2019 00:40, uuuuyyu

An ion of oxygen has a charge of -2. how many protons and electrons does the ion have? an ion of potassium has a charge of +1. how many protons and electrons does this ion have? the mineral fluorite is made of fluorine and calcium. use the periodic table of the elements to determine what charge each of these elements will take in order to form a compound. charge on charge on an atom has 6 protons, 7 neutrons, and 6 electrons. fill in the blanks for these atom: atomic atomic mass this atom belong to which element the element oxygen will always take a charge (valence) of -2 in naturally occurring rocks and minerals. the chemical formula for the compound,which makes up the mineral quartz, is sio2. what is the valence (charge) of silicon in this compound?

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