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Vilka [71]
3 years ago
13

How do the scientists Mendeleev and Moseley differ on their arrangement for the periodic table? A) Their periodic table was arra

nged the same. B) Moseley arranged the elements based on atomic masses while Mendeleev arranged the elements based on atomic number. C) Moseley arranged the elements based on atomic numbers while Mendeleev arranged the elements based on atomic masses. D) Moseley arranged the elements based on the number of protons while Mendeleev arranged the elements based on x-ray frequency.
Chemistry
2 answers:
makkiz [27]3 years ago
6 0

Explanation:  He made the atomic number instead of atomic mass. This fixed the discrepancies with elements such as tellurium and iodine.

julia-pushkina [17]3 years ago
5 0

Answer:

C) Moseley arranged the elements based on atomic numbers while Mendeleev arranged the elements based on atomic masses.

Explanation:

I did it on USA test prep

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<span>No of moles of Fe = Mass / Relative molar mass of Fe. So no of moles = 89.4/ 55.845 = 1.60. The. Chemical reaction is represented as follows. 4 Fe + 3 O2 which gives 2Fe2 O3 . This means that 4 atoms of Iron reacts with 3 atoms of Oxygen to produce Iron oxide. Hence 1.60*4 moles of Fe will need to react 1.6 * 3 moles of Oxygen to produce 2 moles of Iron oxide. Hence 4.8 moles of Oxygen will be required.</span>
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