CLB Hóa học vui Hóa Học Tiếng Anh- Tuần 3/Tháng 11

[Tư Âm Diệp Ẩn]

Sao không ai trả lời vậy nè, câu hỏi khó quá chẳng
Answeri) RBr, (ii) ROH, and (iii) ArNH2

(III) nha Em đoán vậy

này là ghi công thức hihi
Q7:

mọi người tham gia năng nổ nào @Triệu Vân 567 @Minh Dora

 

[Dương Nhạt Nhẽo]

Sao không ai trả lời vậy nè, câu hỏi khó quá chẳng
Answeri) RBr, (ii) ROH, and (iii) ArNH2

này là ghi công thức hihi
Q7:

mọi người tham gia năng nổ nào @Triệu Vân 567 @Minh Dora

chịu thôi, ko hiểu nó nói về gì

 

[Đặng Quốc Khánh 10CA1]

B

Sao không ai trả lời vậy nè, câu hỏi khó quá chẳng
Answeri) RBr, (ii) ROH, and (iii) ArNH2

này là ghi công thức hihi
Q7:

mọi người tham gia năng nổ nào @Triệu Vân 567 @Minh Dora

 

[Tư Âm Diệp Ẩn]

chịu thôi, ko hiểu nó nói về gì

B

có vẻ mọi người nản rồi nhỉ?
Đáp án câu 7 đây:
(a) They differ by the number of CH4 group.
(b) They undergo similar reaction whose rates depend on the size of the R group and shape of the molecule,
(c) For compounds with similar carbon chains, there is a regular change in physical properties such as an increase in boiling points or, in some cases, a decrease in water solubility
Đọc kĩ câu hỏi nha!
Q8:How are molecular weights determined experimentally?
Tham gia đi nào, sao mọi người bỏ rơi mình quá trời
@Triệu Vân 567 @Kawaii Nezumi @....

 

[Dương Nhạt Nhẽo]

có vẻ mọi người nản rồi nhỉ?
Đáp án câu 7 đây:
(a) They differ by the number of CH4 group.
(b) They undergo similar reaction whose rates depend on the size of the R group and shape of the molecule,
(c) For compounds with similar carbon chains, there is a regular change in physical properties such as an increase in boiling points or, in some cases, a decrease in water solubility
Đọc kĩ câu hỏi nha!
Q8:How are molecular weights determined experimentally?
Tham gia đi nào, sao mọi người bỏ rơi mình quá trời
@Triệu Vân 567 @Kawaii Nezumi @....

An experiment for the determination of the molecular weight of gases of lowmolecular weight is described
5 phút rùi

 

[Tư Âm Diệp Ẩn]

An experiment for the determination of the molecular weight of gases of lowmolecular weight is described

Càng về cuối càng ít cao nhân vậy nè, rủ mọi người tham gia nào!!!
Đáp án câu 8:
From freezing point depressions, boiling point elevations, vapour density measurements, and osmotic pressure measurements (for substances with high molecular weights). Today, most molecular weights are determined through mass spectrometry
Q9: Define the term: ground state?

 

[Đặng Quốc Khánh 10CA1]

An experiment for the determination of the molecular weight of gases of low molecular weight is described. The method involves filling a small balloon with the gas to be determined. The weight of the gas inside the balloon is obtained by subtracting the weight of the balloon from the weight of air displaced when the balloon just floats in air, neither rising nor sinking. From the volume of the gas inside the balloon and the weight of the gas calculated, the density and molecular weight of the gas can be calculated. The experiment is simple, low-cost, and easy to perform. It is applicable to gases of low molecular weight such as hydrogen, helium, methane, and natural gas (mostly methane). Typical results are within 1-3% of the true molecular weight of the gas being determined.

 

[namnam06]

The ground state applies to any quantized property of a particle. In chemistry,
• electron ground states
• vibrational ground states
• rotational ground states
of atoms and molecules are important, as are their excited states.
At room temperature, most molecules are in electron and vibrational ground states; higher temperatures are needed for molecules to enter excited states. However, most molecules are in an excited rotational state at room temperature, because less energy is needed for a molecule to enter a rotational excited state than an electron or vibrational excited state.

 

[Dương Nhạt Nhẽo]

Càng về cuối càng ít cao nhân vậy nè, rủ mọi người tham gia nào!!!
Đáp án câu 8:
From freezing point depressions, boiling point elevations, vapour density measurements, and osmotic pressure measurements (for substances with high molecular weights). Today, most molecular weights are determined through mass spectrometry
Q9: Define the term: ground state?

The ground state of an atomic nucleus, atom, or molecule is its lowest energy state. Higher energy states are described as excited states.

 

[Đặng Quốc Khánh 10CA1]

The ground state of a quantum-mechanical system is its lowest-energy state; the energy of the ground state is known as the zero-point energy of the system. An excited state is any state with energy greater than the ground state. In the quantum field theory, the ground state is usually called the vacuum state or the vacuum.

 

[Đặng Quốc Khánh 10CA1]

Tiếp đi ạ @Tư Âm Diệp Ẩn

 

[Tư Âm Diệp Ẩn]

The ground state applies to any quantized property of a particle. In chemistry,
• electron ground states
• vibrational ground states
• rotational ground states
of atoms and molecules are important, as are their excited states.
At room temperature, most molecules are in electron and vibrational ground states; higher temperatures are needed for molecules to enter excited states. However, most molecules are in an excited rotational state at room temperature, because less energy is needed for a molecule to enter a rotational excited state than an electron or vibrational excited state.

The ground state of an atomic nucleus, atom, or molecule is its lowest energy state. Higher energy states are described as excited states.

The ground state of a quantum-mechanical system is its lowest-energy state; the energy of the ground state is known as the zero-point energy of the system. An excited state is any state with energy greater than the ground state. In the quantum field theory, the ground state is usually called the vacuum state or the vacuum.

Đáp án câu 9:
The lowest energy state of a confined electron (or an atom or molecule) is called the ground state.
Cuối cùng, hãy đến với question 10: Define the term: excited state?
@Triệu Vân 567 @Kawaii Nezumi @namnam06 @Kuroko - chan

 

[namnam06]

Đáp án câu 9:
The lowest energy state of a confined electron (or an atom or molecule) is called the ground state.
Cuối cùng, hãy đến với question 10: Define the term: excited state?
@Triệu Vân 567 @Kawaii Nezumi @namnam06 @Kuroko - chan

a state of a physical system (such as an atomic nucleus, an atom, or a molecule) that is higher in energy than the ground state

 

[Đặng Quốc Khánh 10CA1]

In quantum mechanics, an excited state of a system (such as an atom, molecule or nucleus) is any quantum state of the system that has a higher energy than the ground state (that is, more energy than the absolute minimum). Excitation is an elevation in energy level above an arbitrary baseline energy state. In physics there is a specific technical definition for energy level which is often associated with an atom being raised to an excited state.[citation needed] The temperature of a group of particles is indicative of the level of excitation (with the notable exception of systems that exhibit negative temperature).

 

[Dương Nhạt Nhẽo]

Đáp án câu 9:
The lowest energy state of a confined electron (or an atom or molecule) is called the ground state.
Cuối cùng, hãy đến với question 10: Define the term: excited state?
@Triệu Vân 567 @Kawaii Nezumi @namnam06 @Kuroko - chan

Definition of excited state. : a state of a physical system (such as an atomic nucleus, an atom, or a molecule) that is higher in energy than the ground state.

 

[Miracle Twilight]

Đáp án câu 9:
The lowest energy state of a confined electron (or an atom or molecule) is called the ground state.
Cuối cùng, hãy đến với question 10: Define the term: excited state?
@Triệu Vân 567 @Kawaii Nezumi @namnam06 @Kuroko - chan

Definition of excited state. : a state of a physical system (such as an atomic nucleus, an atom, or a molecule) that is higher in energy than the ground state.

 

[Tư Âm Diệp Ẩn]

Đáp án vị ẩn sĩ cuối cùng đây:
All higher energy states not ground states are called excited states.

 

[Tử Bàn]

off ngay từ câu 4 : ((

 

[Miracle Twilight]

hơi chán nên em qua lịch sử luôn đó

 

[Đặng Quốc Khánh 10CA1]

Kết thúc chương trình!!! Tam j biệt và hẹn gặp lại lần sau