July 18, 2016


Delia asked 5 years ago

1.Precizati afirmatiile corecte referitoare la o solutie de acid acetic de concentratie 6%:
a.Contine 0,1 moli de acid acetic dizolvat in 94 g de apa.
b.contine 0,6 moli de acid acetic dizolvat in 100 ml  de apa.
c.contine 0,6 g de  acid acetic in 10 g de solutie.
d.contine 0,001 moli de acid acetic dizolvat intr-un cm3 de apa.
e.contine 1 mol de acid acetic intr-un kg de solutie.
Ca raspunsuri corecte dau A,C,E. Insa mie mi se pare ca si D-ul e corect luand densitatea apei 1g/cm3. Explicatie de ce nu ar fi?
2. acidul 2-fenilacetic este considerat acid aromatic?
3. Precizati care dintre formulele moleculare enumerate mai jos pot corespunde unui compus din clasa fenolilor.
Raspuns corect:A,B,E. De ce C-ul nu e bun?
4.Am gasit intr-o grila data ca falsa afirmatia: Valorile constantelor de bazicitate ale aminelor nu depind de temperatura. E corect?
5.In alta grila reactia 2-butanamina + HNO2 + HCl= 2-butanol+N2+ H2O e data ca raspuns corect.Eu am considerat ca reactia e incorecta pentru ca la produsi clorul nu mai apare. Se poate neglija?
6. Resturile alchil sunt doar cele care provin de la alcani? Adica,de exemplu, radicalul Ar-CH2- nu este alchil? Daca nu,atunci e considerat aril?
7.Care dintre urmatoarele alchene prezinta izomeri cis-trans:
c. 2-pentena
Raspuns corect:B,C,D. de ce nu e luat si E-ul? Stiam ca alchenele care prezinta la cei 2 atomi de carbon dublu legati acelasi substituent izomerii lor geometrici se pot numi si cis-trans. In cazul E, sunt doi radical etil identici.

veisiotte replied 2 months ago

lamina propecia

EugeneTrits replied 4 weeks ago


jimdofreeNew replied 4 weeks ago

We spent a lot of time at her home. Maybe so her mother could keep an eye on us. Mrs. Spencer made sure to be around, offering drinks, snacks, chit chat. I noticed that she was fairly young herself. Granted at my age, anyone over 25 was old, but she was probably mid-30s, divorced. If she was a indiction of how Carley would develop, maybe I should wait. Mrs. Spencer had fuller breasts and a nice butt. She appeared to be in great shape for her “advanced” age. I knew she was keeping an eye on me as much as I was on her and her younger daughter. Her eldest, Sharon was away at college at the time. With Mrs. Spencer around we mostly limited ourselves to holding hands and sneaking in a few light kisses. One day Mrs. Spencer caught us by surprise walking in as I’d slid my hand up from Carley’s stomach to rub her right breast through her shirt. She didn’t really need a bra yet, so I could feel her nipple, hard, through her shirt. Just this much contact had me hard also.

https://sites.google.com/view/07uwtsBw3g6jCPGd https://sites.google.com/view/J6MEDtYFnIWB8dNr

porno trio replied 4 weeks ago

Really a good deal of useful knowledge.
porno trio
taboo porno http://www.deliciouslysimple.ca/

spedra 200 fa male replied 4 weeks ago

Howdy! I justt wish to offer you a big thumbs up forr your great info you’ve got right here on this post.
I am returning to your web site for more soon.
spedra 200 fa male https://comprarcialis5mg.org/it/comprare-spedra-avanafil-senza-ricetta-online/

Jacktrima replied 4 weeks ago

[url=https://orderwithoutprescription.com/]wellbutrin cost australia[/url]

Ivytrima replied 4 weeks ago

[url=https://buycialistb.com/]cialis online drugstore[/url]

Jimtrima replied 3 weeks ago

[url=https://viagrapio.com/]where can you buy viagra pills[/url]

Ashtrima replied 1 week ago

[url=http://buysildenafil.sale/]sildenafil soft gel[/url]

payday loans online replied 1 week ago

hello my lovely stopforumspam member

What are the Types of Loans in Ohio depending on the purpose
Specific purpose payday loans in Ohio. Funds received in debt may be spent only for a specific purpose specified in the loan agreement.
Non-purpose loan. The debtor may spend the money received at his discretion.
Most popular specific purpose payday loans in Ohio are:

House loan. The most common, of course, is a mortgage when the purchased property acts as collateral for a loan. Sometimes a youth loan is issued, with lighter conditions for debtors. Still quite common is a housing loan that does not imply purchased housing in the form of collateral.
Car loan – payday loans in Ohio to a car or similar vehicle. The key is often the purchased goods, making the terms of the loan better. Also, loan conditions are improved: car insurance, life and health insurance of the borrower, and receiving a salary to the account of the creditor bank.
Land loan. To purchase a plot for construction or agricultural activities.
Consumer. For purchases in modern supermarkets, equipment stores, you can take a personal loan right at the point of sale. Often, specialists located there can contact the bank and get a regular or fast payday loans. Borrowed funds automatically pay for the goods, and the consultant explains when and how to re-pay the debt.
Educational loan. It is issued to students, as well as to applicants who have passed the competition, to pay for tuition at universities, colleges, etc.
Broker loan. For the circulation of securities, payday loans in Ohio are issued to an exchange broker, se-curities are purchased securities.
Others. Objectives not related to those listed, but agreed and approved by the creditor.

Nicktrima replied 2 days ago

[url=http://cialis.red/]where can i buy cialis[/url]

Marytrima replied 1 day ago

[url=https://cialisonlinex.com/]cialis australia pharmacy[/url]

This site uses Akismet to reduce spam. Learn how your comment data is processed.

1 Answers
Anonymous answered 5 years ago
  1. 0.06 g acid(md), 1,6 g solutie(ms), cp diferit de 6.
  2. Da.
  3. Si eu consider C-ul raspuns adevarat.
  4. Mi s-a spus ca intr-adevar depind de temperatura.
  5. Spune nr. grilei, te rog.
  6. Da. Nu. Nu stiu.
  7. Probabil e deja izomeria E/Z.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Your Answer

7 + 6 =