PEM 1oTri QO12

1. A fórmula molecular de um hidrocarboneto com cadeia carbônica citada abaixo é:

C9H8

C9H7

C9H10

C9H11

C9H12

The molecular formula C9H8 indicates that the hydrocarbon has 9 carbon atoms and 8 hydrogen atoms. This suggests that the hydrocarbon is an aromatic compound, as it has a high degree of unsaturation. Aromatic compounds typically have a ring structure with alternating double bonds, which leads to a lower hydrogen to carbon ratio compared to aliphatic hydrocarbons. Therefore, the correct answer is C9H8.

Explanation

The molecular formula C9H8 indicates that the hydrocarbon has 9 carbon atoms and 8 hydrogen atoms. This suggests that the hydrocarbon is an aromatic compound, as it has a high degree of unsaturation. Aromatic compounds typically have a ring structure with alternating double bonds, which leads to a lower hydrogen to carbon ratio compared to aliphatic hydrocarbons. Therefore, the correct answer is C9H8.

2. A substância dietil-amina tem cadeia carbônica?

acíclica, saturada, heterogênea

cíclica, saturada, homogênea

cíclica, insaturada, heterogênea

acíclica, ramificada, homogênea

acíclica, normal, homogênea

The correct answer is "acíclica, saturada, heterogênea". This means that the substance dietil-amina has a acyclic (non-cyclic) carbon chain, it is saturated (no double or triple bonds between carbon atoms), and it is heterogenous (composed of different elements or compounds).

Explanation

The correct answer is "acíclica, saturada, heterogênea". This means that the substance dietil-amina has a acyclic (non-cyclic) carbon chain, it is saturated (no double or triple bonds between carbon atoms), and it is heterogenous (composed of different elements or compounds).

3. O mirceno, responsável pelo "gosto azedo da cerveja", é representado pela estrutura:

acíclica, heterogênea, saturada

acíclica, heterogênea, insaturada

cíclica, heterogênea, insaturada

aberta, homogênea, saturada

aberta, homogênea, insaturada

The correct answer is "aberta, homogênea, insaturada". This means that the structure of mircene, which is responsible for the "sour taste of beer", is open (acyclic), has a uniform composition (homogeneous), and contains double bonds (unsaturated).

Explanation

The correct answer is "aberta, homogênea, insaturada". This means that the structure of mircene, which is responsible for the "sour taste of beer", is open (acyclic), has a uniform composition (homogeneous), and contains double bonds (unsaturated).

4. O citral tem forte sabor de limão e é empregado em alimentos para dar sabor e aroma cítricos. Sua cadeia carbônica é classificada como?

homogênea, insaturada e ramificada

heterogênea, insaturada e ramificada

homogênea, saturada e normal

heterogênea, saturada e aromática

homogênea, insaturada e aromática

The correct answer is "homogênea, insaturada e ramificada". This is because the description of citral's carbon chain as "homogênea" means that it consists of the same type of carbon atoms, "insaturada" means that it contains double bonds, and "ramificada" means that it has branching in its structure.

Explanation

The correct answer is "homogênea, insaturada e ramificada". This is because the description of citral's carbon chain as "homogênea" means that it consists of the same type of carbon atoms, "insaturada" means that it contains double bonds, and "ramificada" means that it has branching in its structure.

5. O composto de fórmula:

apresenta quantos carbonos primários, secundários, terciários e quaternários respectivamente ?

5 , 5 , 2 , 1

5 , 4 , 3 , 1

7 , 4 , 1 , 1

6 , 4 , 1 , 2

7 , 3 , 1 , 2

The compound with the given formula has 7 primary carbons, 4 secondary carbons, 1 tertiary carbon, and 1 quaternary carbon.

Explanation

The compound with the given formula has 7 primary carbons, 4 secondary carbons, 1 tertiary carbon, and 1 quaternary carbon.

6. O ácido adípico que é matéria prima para a produção de náilon, apresenta cadeia carbônica:

saturada, homogênea e ramificada.

saturada, heterogênea e normal.

insaturada, homogênea e ramificada.

saturada homogênea e normal.

insaturada, homogênea e normal.

The correct answer is "saturada homogênea e normal." This means that the carbon chain of the acid is saturated (contains only single bonds), homogeneous (all carbon atoms are the same), and normal (linear, without any branches or side chains).

Explanation

The correct answer is "saturada homogênea e normal." This means that the carbon chain of the acid is saturated (contains only single bonds), homogeneous (all carbon atoms are the same), and normal (linear, without any branches or side chains).

7. Quando uma pessoa "leva um susto", a suprarenal produz uma maior quantidade de adrenalina, que é lançada na corrente sanguínea. Analisando a fórmula estrutural da adrenalina, podemos concluir que a cadeia orgânica ligada ao anel aromático é:

aberta, saturada e homogênea.

aberta, saturada e heterogênea.

aberta, insaturada e heterogênea.

fechada, insaturada e homogênea.

fechada, insaturada e heterogênea.

The structure of adrenaline contains an open chain, meaning it is not a cyclic structure. It is saturated, meaning it contains only single bonds between carbon atoms. Lastly, it is heterogenous, meaning it contains different types of atoms, such as carbon, hydrogen, nitrogen, and oxygen. Therefore, the correct answer is "aberta, saturada e heterogênea."

Explanation

The structure of adrenaline contains an open chain, meaning it is not a cyclic structure. It is saturated, meaning it contains only single bonds between carbon atoms. Lastly, it is heterogenous, meaning it contains different types of atoms, such as carbon, hydrogen, nitrogen, and oxygen. Therefore, the correct answer is "aberta, saturada e heterogênea."

8. A cadeia carbônica a seguir classifica-se como:

cíclica, saturada, heterogênea, ramificada.

aberta, saturada, heterogênea, normal.

aberta, saturada, heterogênea, ramificada.

acíclica, insaturada, homogênea, ramificada.

aberta, insaturada, homogênea, normal.

The given carbon chain is open, meaning it does not form a closed ring structure. It is saturated, as it contains only single bonds between carbon atoms. It is heterogeneous, as it contains different types of atoms (carbon and possibly other elements). It is normal, as it does not have any branches or side chains.

Explanation

The given carbon chain is open, meaning it does not form a closed ring structure. It is saturated, as it contains only single bonds between carbon atoms. It is heterogeneous, as it contains different types of atoms (carbon and possibly other elements). It is normal, as it does not have any branches or side chains.

Pem 1otri Qo12