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Step2247 [10]
3 years ago
5

How did mendeleev orginally organize the element in his periodic table

Chemistry
2 answers:
Akimi4 [234]3 years ago
7 0

Answer:

By increasing atomic mass from left to right and top to bottom.

horrorfan [7]3 years ago
4 0
From increasing atomic mass. He also made groups and periods.
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_______ is the process in which light energy is transformed into food energy. A.life B.photosynthesis C.abiotic D.biotic
kolezko [41]

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B) Photosynthesis is the process in which light energy is transformed into food energy.

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2 years ago
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Sodium (chemical symbol Na) is atomic number 11 and is in the first column of the periodic table so it has one valence electron.
lisabon 2012 [21]
Na is cation so it loses electron to be positive and become stable losing one valence shells one electron so it's oxidation number is +1 ie A is correct
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3 years ago
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Which of these molecules is nonpolar?<br> a.CH3CI<br> b.CO<br> c.O2<br> d.PF3
valentina_108 [34]

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i think the answer is D

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2 years ago
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So it will help you see what is 5 times 9 it is 40.
dolphi86 [110]

Answer:

40

Explanation:

5+5+5+5+5+5+5+5+5=40

7 0
3 years ago
Given the balanced ionic equation representing the reaction in an operating voltaic cell: zn(s) + cu2+(aq) → zn2+(aq) + cu(s) th
soldi70 [24.7K]

Answer: from the Zn anode to the Cu cathode


Justification:


1) The reaction given is: Zn(s) + Cu₂⁺ (aq) -> Zn²⁺ (aq) +Cu(s)


2) From that, you can see the Zn(s) is losing electrons, since it is being oxidized (from 0 to 2⁺), while Cu²⁺, is gaining electrons, since it is being reduced (from 2⁺ to 0).


3) Then, you can already tell that electrons go from Zn to Cu.


4) The plate where oxidation occurs is called anode, and the plate where reduction occus is called cathode.


So you get that the electrons flow from the anode (Zn) to the cathode (Cu).


Always oxidation occurs at the anode, and reduction occurs at the cathode.

3 0
3 years ago
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