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Murljashka [212]
3 years ago
12

Nyatakan tiga bentuk bagi atom karbon dan perbezaan ringkas diantara ketiga-tiga atom karbon tersebut

Chemistry
1 answer:
Montano1993 [528]3 years ago
3 0

Answer:

Berlian, grafit dan fullerenes.

Penjelasan:

Tiga bentuk atom karbon adalah berlian, grafit dan fullerenes. Ketiga-tiga atom karbon ini adalah bentuk atom karbon allotrophic. Perbezaan utama antara atom karbon adalah berikut:

Ketiga-tiga bentuk allotrophic mempunyai sifat kimia yang sama tetapi sifat fizikalnya berbeza antara satu sama lain. Berlian adalah yang paling sukar sementara grafit lembut. Dalam berlian, satu atom karbon berkongsi elektron dengan empat atom karbon yang lain sementara dalam grafit, satu atom karbon berkongsi elektron dengan tiga atom karbon dan fulleren adalah atom di mana satu atom karbon dihubungkan dengan beberapa atom karbon melalui ikatan kovalen. Ketiga-tiga atom karbon padat pada suhu bilik.

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Standard reduction potentials for nickel(II) and copper(II) The standard reduction potential for a substance indicates how readi
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The standard potential, E cell, for this galvanic cell is 0.5670V

Explanation:

Ni²⁺(aq)  +  2e⁻   →   Ni(s)           E red =  - 0.23V      ANODE

Cu²⁺(aq) +  2e-    →  Cu(s)          E red = + 0.337V    CATHODE

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How does nuclear fission of Uranium - 234 result in electricity being generated?
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See explanation

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Write the net ionic equation for the reaction that occurs when equal volumes of 0.546 M aqueous acetylsalicylic acid (aspirin) a
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Answer:

C_9H_8O_4+C_2H_3O_2^-\rightarrow C_2H_4O_2+C_9H_7O_4^-

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to figure out the required net ionic equation by firstly writing out the complete molecular equation between aspirin and sodium acetate:

C_9H_8O_4+NaC_2H_3O_2\rightarrow C_2H_4O_2+NaC_9H_7O_4

Whereas acetic acid and sodium acetylsalicylate are formed. Now, we write the complete ionic equation whereby sodium acetate and sodium acetylsalicylate are ionized because they are salts yet neither aspirin nor acetic acid are ionized as they are weak acids:

C_9H_8O_4+Na^++C_2H_3O_2^-\rightarrow C_2H_4O_2+Na^++C_9H_7O_4^-

Finally, for the net ionic equation we cancel out the sodium spectator ions to obtain:

C_9H_8O_4+C_2H_3O_2^-\rightarrow C_2H_4O_2+C_9H_7O_4^-

Regards!

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