Cho phản ứng đơn giản xảy ra trong bình kín: 3H₂(g) + N₂(g) ⟶ 2NH₃(g).

Tốc độ phản ứng thay đổi như thế nào nếu nồng độ H₂ không đổi và nồng độ N₂ tăng 2 lần?

Thời kì nào Nho giáo, Phật Giáo, Đạo giáo được du nhập vào nước ta

Đơn vị của điện thế là vôn (V). 1V bằng

The word close in line 6 is closest in meaning to ___

Phản ứng chuyển hoá giữa hai dạng đơn chất của phosphorus (P):

P (s, đỏ) ⟶ P (s, trắng)          \({\Delta _r}H_{298}^o = 17,6kJ\)      

Điều này chứng tỏ phản ứng:

Tính khối lượng riêng của không khí ở đỉnh núi Fansipan (Phan-Xi-Păng) cao 3140 m. Biết rằng mỗi khi cao thêm 10,0 m (so với mực nước biển) thì áp suất khí quyển giảm 1,00 mmHg và nhiệt độ trên đỉnh núi là $2,{00}^{°}\text{C}.$ Khối lượng riêng của không khí ở điều kiện tiêu chuẩn (áp suất 760 mmHg, nhiệt độ $0^{°}\text{C}$) là \(1,29\;{\rm{kg}}/{{\rm{m}}^3}.\)

Chọn ý đúng: Các công việc trong lĩnh vực xây dựng?

Read the following passage about the Reimagining International Cooperation and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

Global environmental governance is changing how countries work together. Nations now understand that pollution, climate change, and resource problems cross borders. Traditional agreements between countries are not enough anymore. New approaches include businesses, local communities, and citizen groups working with governments. This all-hands-on-deck approach helps create better solutions for our planet. Many successful projects show that when different groups cooperate, they can solve difficult environmental problems that single countries cannot fix alone.

Environmental governance faces many challenges today. [I] Political differences between nations often slow down important decisions. [II] Some countries worry that strict environmental rules might hurt their economic growth. Despite these obstacles, new technologies are helping countries monitor environmental changes better. [III] Satellite data and computer models allow scientists to track forest loss, ocean pollution, and climate patterns. [IV] This information helps leaders make smarter decisions about protecting natural resources.

The future of environmental governance depends on innovation. Digital platforms now connect environmental experts around the world instantly. Young people are bringing fresh ideas through social media campaigns and protest movements. Indigenous communities contribute valuable traditional knowledge about sustainable living practices. Financial institutions are creating new ways to fund green projects in developing countries. These combined efforts are creating a more flexible and responsive system of global cooperation that can adapt to changing environmental conditions more quickly than old-fashioned diplomatic channels.

Effective environmental governance requires balance between global standards and local solutions. While international agreements provide important frameworks, communities need freedom to implement approaches that fit their unique situations. Successful governance models respect cultural differences while maintaining scientific standards. Education plays a crucial role in building public support for environmental policies. When citizens understand environmental issues, they make better choices and hold their leaders accountable. The most promising path forward combines strong international institutions with energetic local action to create lasting environmental solutions.

The word “instantly” in paragraph 3 is OPPOSITE in meaning to _________.

Nội dung nào dưới đây không đúng khi bàn về vấn đề đạo đức trong kinh doanh?

Hydrogen có ba đồng vị bền là $^1_1H$, $^2_1H$, $^3_1H$. Oxygen có ba đồng vị bền là $^{16}_8O$, $^{17}_8O$ và $^{18}_8O$. Số phân tử nước có thể được tạo thành từ các đồng vị trên là

Đọc đoạn trích sau và trả lời câu hỏi:

Hồn Trương Ba: Ông cho tôi suy nghĩ một lát đã… Việc này bất ngờ quá! (ngồi xuống, nghĩ ngợi) Nhập vào cu Tị… (lẩm bẩm) Tôi, một ông già gần 60, cu Tị thì còn chưa bắt đầu cuộc đời, còn đang tuổi ăn, tuổi lớn, chạy nhảy vô tư… có ổn không nhỉ? (nhắm mắt lại). Thử hình dung xem nào… sẽ phải giải thích cho chị Lụa: Tôi không phải là con chị, chị ấy sẽ không nguôi thương nhớ con… Có khi tôi còn phải sang nhà chị Lụa ở… Rồi còn hàng xóm, lí trưởng, trương tuần… Bao nhiêu sự rắc rối. Bà vợ tôi, các con tôi sẽ nghĩ ngợi, xử sự thế nào, khi chồng mình, bố mình mang thân của một thằng bé lên 10? Làm trẻ con không phải dễ! Mà cái Gái nhà tôi, nó sẽ nghĩ thế nào nhỉ?

Đế Thích: Chắc nó sẽ thích, Nó thân với cu Tị mà.

(Hồn Trương Ba, da hàng thịt, Lưu Quang Vũ)

Hồn Trương Ba đã nhận ra bi kịch nào trong lời thoại trên?

Cho tứ diện ABCD. Gọi M, N lần lượt là trung điểm của AB và AC, E là điểm trên cạnh CD sao cho ED = 3EC. Thiết diện tạo bởi mp(MNE) và tứ diện ABCD là: 

Các công ty đa quốc gia có đặc điểm nào?

Theo em, kinh doanh là việc thực hiện liên tục một, một số hoặc tất cả công đoạn của quá trình từ đầu tư, sản xuất, tiêu thụ sản phẩm hoặc cung ứng dịch vụ trên thị trường nhằm mục đích nào sau đây?

Read the passage below and choose A, B, C or D to fill in each blank.

In Part Three of the Speaking Section you work together with a partner. You have to do a single task which usually lasts about 3 minutes. One possible task is “problem solving”, which means you have to look at some visual information and then discuss the problem with your partner. You may be shown photos, drawings, diagrams, maps, plans, advertisements or computer graphics and it  is essential that everyone (631)___________ them carefully. If necessary, check you know exactly (632) ________________ the examiner to repeat the (633) __________ or make them clearer.

While you are doing the task, the examiner will probably say very little and you should ask your partner questions and (634)  ___________ suggestions if he or she is not saying much. If either of you have any real difficulties, the examiner may decide to step in and help. Normally, however, you find plenty to say, which helps the assessor to give you a fair mark. (635) ____________in doing the task by competing with your partner, which includes taking turns in giving opinions and replying appropriately, although in the end it may be possible to “agree to disagree”.

Trong dao động điều hòa của một vật thì đại lượng nào sau đây không thay đổi theo thời gian?

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions:

            For many people who live in cities, parks are an important part of the landscape. They provide a place for people to relax and play sports, as well as a refuge from the often harsh environment of a city. What people often overlook is that parks also provide considerable environmental benefits.

            One benefit of parks is that plants absorb carbon dioxide - a key pollutant - and emit oxygen, which humans need to breathe. According to one study, an acre of trees can absorb the same amount of carbon dioxide that a typical car emits in 11,000 miles of driving. Parks also make cities cooler. Scientists have long noted what is called the Urban Heat Island Effect: building materials such as metal, concrete, and asphalt absorb much more of the sun’s heat and release it much more quickly than organic surfaces like trees and grass. Because city landscapes contain so much of these building materials, cities are usually warmer than surrounding rural areas. Parks and other green spaces help to mitigate the Urban Heat Island Effect.

            Unfortunately, many cities cannot easily create more parks because most land is already being used for buildings, roads, parking lots, and other essential parts of the urban environment. However, cities could benefit from many of the positive effects of parks by encouraging citizens to create another type of green space: rooftop gardens. While most people would not think of starting a garden on their roof, human beings have been planting gardens on rooftops for thousands of years. Some rooftop gardens are very complex and require complicated engineering, but others are simple container gardens that anyone can create with the investment of a few hundred dollars and a few hours of work.

            Rooftop gardens provide many of the same benefits as other urban park and garden spaces, but without taking up the much-needed land. Like parks, rooftop gardens help to replace carbon dioxide in the air with nourishing oxygen. They also help to lessen the Urban Heat Island Effect, which can save people money.

            In the summer, rooftop gardens prevent buildings from absorbing heat from the sun, which can significantly reduce cooling bills. In the winter, gardens help hold in the heat that materials like brick and concrete radiate so quickly, leading to savings on heating bills. Rooftop vegetable and herb gardens can also provide fresh food for city dwellers, saving them money and making their diets healthier. Rooftop gardens are not only something everyone can enjoy, they are also a smart environmental investment.

Question 36: Based on its use in paragraph 2, it can be inferred that mitigate belongs to which of the following word groups?

Read the following passage about the Second Acts That Inspire and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

Life often presents us with unexpected challenges that force us back to the drawing board. Whether due to personal setbacks, career changes, or unforeseen circumstances, the courage to begin again can lead to remarkable transformations. Many inspiring individuals have shown that it's never too late to reinvent oneself and pursue new dreams. Throughout history, countless people have overcome seemingly impossible situations through sheer determination.

[I] Take J.K. Rowling, for instance. Before becoming a literary sensation, she was a struggling single mother living on welfare. [II] Her determination eventually paid off when her books became a global phenomenon, proving that setbacks can become stepping stones to success. [III] This remarkable turnaround demonstrates how resilience and unwavering belief in oneself can overcome seemingly insurmountable obstacles. Despite facing depression and financial hardship, she never gave up on her dreams. [IV]

Colonel Harland Sanders' story is another testament to the power of starting anew. At the age of 65, when most people contemplate retirement, he found himself struggling financially after his restaurant failed. Instead of giving up, he traveled across America, sleeping in his car while pitching his chicken recipe to restaurant owners. His recipe for success wasn't just about the perfect blend of herbs and spices; it was about persistence and determination. After facing over 1,000 rejections, he finally established Kentucky Fried Chicken, which grew into a global empire. His unwavering spirit and dedication inspired generations of entrepreneurs worldwide.

These inspiring stories remind us that failure is not final, but rather a chance to redirect our path. Every setback carries the seed of an equal or greater opportunity, and sometimes the end of one chapter is simply the beginning of a better one. The key lies in having the courage to take that first step, even when the future seems uncertain. As these remarkable individuals have shown, it's never too late to rewrite your story and create a powerful second act. Their journeys teach us that persistence and courage ultimately lead to success.

The phrase “back to the drawing board” in paragraph 1 could be best replaced by _________.

Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17.

a. For example, behaviors that are acceptable in one culture, such as direct eye contact, may be considered impolite in another.

b. At first, people may feel excited about exploring a new culture, but this initial enthusiasm often fades as they begin to notice differences in language, customs, and social norms.

c. Culture shock, which occurs when individuals struggle to adapt to a foreign culture, is a common experience for travelers and expatriates.

d. This period of adjustment can be challenging, but it ultimately helps individuals develop a deeper understanding of and respect for cultural diversity.

e. Such differences can lead to feelings of frustration, confusion, or even isolation for newcomers.

Hi Thao,

I hope you're doing well. You asked about my family routines, so let me tell you about three of them.

a. Third, once a month, we clean the garden together. My mum takes care of the flowers, my dad trims the trees, and I sweep the paths.

b. First, every Saturday morning, my family goes cycling in the park. We start early, ride for about an hour, and then have breakfast at a small café. It's healthy and fun.

c. Second, on Wednesday evenings, we have a “no phone” rule.

d. These routines are special to me because they keep us connected and give us good memories.

e.We turn off our devices and spend time talking, playing cards, or doing puzzles. It helps us focus on each other without distractions.

What kind of routines does your family follow?

Please write back soon.

Best regards,

Lan