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c1ffe2c97b187836405dc3d0d9f696bd

Submitted by admin on Tue, 03/09/2021 - 17:52
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Care dintre următoarele afirmații sunt adevărate?

eb53e98ad884fc821287ea1aba21224d

Submitted by admin on Tue, 03/09/2021 - 17:52
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Se pot stabili legături de hidrogen între moleculele de:

f93a4c105773ad16f8dc38c0625497fe

Submitted by admin on Tue, 03/09/2021 - 17:52
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Un amestec al p-dialchilbenzenilor cu M=134 g/mol este supus nitrarii. Care este numărul maxim de mononitroderivati care se pot obține?

b9f81e71b00e893517564f1e5329da1a

Submitted by admin on Tue, 03/09/2021 - 17:52
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Care este hidrocarbura care prin oxidare cu KMnO4 sau K2Cr2O7 in mediu de H2SO4 formează cate un mol de acid malonic, acetona și metil-izopropil-cetona

150015d728cf194e735f79388576eb40

Submitted by admin on Tue, 03/09/2021 - 17:52
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Toate formulele de mai jos corespund unor substanțe reale, cu excepția:

d6a8f5cd0a7d41276d2bb299a8f5c99e

Submitted by admin on Tue, 03/09/2021 - 17:52
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Care dintre afirmațiile următoare, referitoare la baze, sunt adevarate?

5fdbe1916a18d6c411b043e736c6d8ee

Submitted by admin on Tue, 03/09/2021 - 17:52
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Se arde complet un alcan. In care caz raportul de combinare dintre volumele de hidrocarbura și oxigen este de 1:5

fb6cf6cf39484b7171962fd4e688ad18

Submitted by admin on Tue, 03/09/2021 - 17:52
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Se dau hidrocarburile: 1. Metan 2. Etena 3. Acetilenă 4. Benzen 5. Propena 6. Toluen 7. P-xilen. Pot fi clorurate fotochimic:

ac47afd5323eb69ac2bd6dcef81a0e3d

Submitted by admin on Tue, 03/09/2021 - 17:52
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Care dintre următoarele formule moleculare pot corespunde unor cicloalcani?

df741d3a4b4fa4614431b8801d32ca78

Submitted by admin on Tue, 03/09/2021 - 17:52
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Care dintre urmatorii compusi se pot obtine din propena prin cel mult doua reactii?

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