Trên hình chiếu phối cảnh, mặt phẳng hình chiếu là mặt phẳng:

Sulfuric acid (\(H_2SO_4\)) là hoá chất quan trọng, được sản xuất trong công nghiệp bằng phương pháp tiếp xúc qua ba giai đoạn:

(a)  S(s) + O\(_2\)(g) \(\rightarrow\) SO\(_2\)(g)

\((b) \ 2SO_2(g) + O_2(g) \rightleftharpoons 2SO_3(g)\) \(\Delta_rH_{298}^\circ=-197,6 \text{ kJ}\)

(c) nSO\(_3\)(g) + H\(_2\)SO\(_4\)(aq) \(\rightarrow\) H\(_2\)SO\(_4\)\(\cdot\)nSO\(_3\)(l)

Cho các phát biểu sau:

(1) Ở giai đoạn (b), cần dùng xúc tác để cân bằng chuyển dịch sang phải, giảm lượng \(SO_2\) trong khí thải.

(2) Ở giai đoạn (b), khi giảm nhiệt độ thì cân bằng dịch chuyển về phía tạo thành \(SO_3\).

(3) Nhiệt độ ở giai đoạn (b) không được quá thấp vì ảnh hưởng đến tốc độ phản ứng.

(4) Sử dụng nhiên liệu hoá thạch để cung cấp năng lượng cho quá trình sản xuất \(H_2SO_4\) có thể gây ô nhiễm môi trường.

(5) Ở giai đoạn (c), người ta dùng nước cất hấp thụ trực tiếp \(SO_3\) để thu được dung dịch \(H_2SO_4\) loãng.

Liệt kê phát biểu đúng theo kí hiệu số.

Ý nào sau đây không phải là đặc điểm của mô hình hợp tác xã?

Read the following leaflet and mark the letter A, B, C or D on your answer sheet to indicate the option that bestfits each of the numbered blanks from 7 to 12. 

PROMOTE MENTAL WELL-BEING AT HOME!

Nurturing Your Mind and Spirit

Taking care of our mental health is just as important as our physical health, which  helps us cope with stress, build resilience, and lead fulfilling lives.

Facts and Figures

• Nature’s Impact: Studies show that spend time outdoors can significantly reduce stress levels. However, (7)_____ people feel they lack access to green spaces.

• Screen Time Concerns: Excessive daily (8)_____  time is linked to increased anxiety and depression. (9)_____ spending too much time on the phone screen, why don’t we go outside and get some fresh air?

Positive Actions You Can Take

• Designate a cozy corner in your home for reading, meditation, or simply unwinding. Make it a daily habit with soft lighting, plants, and comfortable seating.

• Start a gratitude journal! (10)_____ three things you're thankful for each day to cultivate a positive mindset.

• Make time for meaningful (11)_____ with family and friends. Connect with (12)_____ regularly help strengthens your support network and combats feelings of isolation.

Hai biểu đồ dưới đây cho thấy tỉ trọng số lượng và trị giá xuất khẩu cà phê của Việt Nam năm 2021 phân theo nước và vùng lãnh thổ:

Giả sử năm 2021, xuất khẩu cà phê của Việt Nam đạt 1,52 triệu tấn, trị giá đạt 3 tỷ USD.

Nước hoặc vùng lãnh thổ nào có giá bán trung bình cao nhất?

Choose the word or phrase (A, B, C, or D) that best fits each space in the following passage.

To many people, their friends are the most important in their life. Really good friends always (16)____joys and sorrows with you and never turn their backs on you. Your best friend may be someone you have known all your life or someone you have grown (17) ___with.

There are all sorts of things that can (18)____about this special relationship. It may be the result of enjoying the same activities and sharing experiences. Most of us have met someone that we have immediately felt relaxed with as if we had known them for ages. However, it really takes you years to get to know someone well (19)___to consider your best friend.

To the majority of us, this is someone we trust completely and (20)___understands us better than anyone else. It's the person you can tell him or her your most intimate secrets.

(17)____

Phân tử nào sau đây khác so với các phân tử còn lại?

Tổ chức nào dưới đây thuộc hệ thống chính trị nước ta?

Read the following passage about the Koromi trend 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.

[I]. If you’ve done any traveling at all, you’re likely quite aware that customs and etiquette differ from one culture to another: what may be perfectly innocuous in one place may be hideously offensive in another, and vice-versa. [II]. Granted, even if you haven’t traveled at all, you’re probably aware of the fact that certain types of behavior aren’t exactly acceptable in other countries: belching at the table may be a sign of gratitude in some places, but in most areas of North America and Europe, such a display will earn you a fair bit of ire. [III]. Whether you plan on traveling to any of the places listed below or just doing business with a foreign client, it’s important to educate yourself on the standards of politesse and etiquette beforehand-the last thing you want to do is offend someone with any ignorant, boorish behavior. [IV]. Here’s how to be polite in different countries.

When dealing with Japanese clients, be sure to dress fairly conservatively, and make sure that you bow lower than they do upon meeting them. Accept gifts with both hands and open them later, not in front of the giver, and never blow your nose at the dining table. Avoid asking and answering direct questions: it’s better to imply rather than ask, and to answer with vagueness during conversations.

In Kenya, when greeting someone older or of a higher status than yourself, grip their right wrist with your left hand while shaking it; it’s a sign of respect and deference. Do ask questions about their health, family, business etc. before getting to major topics, as skipping these niceties is seen as impolite. If sharing meals, do not begin eating until the eldest male has been served and starts to eat.

Turning down an alcoholic drink is considered terribly offensive in Russia, so it’s a good idea to fortify yourself with some greasy food before heading out for a meal with Russian or Ukrainian clients. Don’t smile at strangers or they’ll think you’re deranged, and when paying for items, place your money on the counter rather than trying to hand it directly to the cashier.

Which of the following best summarizes the passage?

Phát biểu nào không đúng với vận động nội lực theo phương nằm ngang?

Một thanh sắt AB dài, đồng chất, tiết diện đều, được đặt trên bàn sao cho $\frac{1}{4}$ chiều dài của nó nhô ra khỏi bàn. Tại đầu nhô ra B, người ta đặt một lực có độ lớn F hướng thẳng đứng xuống dưới. Khi lực đạt tới giá trị 40 N thì đầu kia của thanh bắt đầu bênh lên. Tính khối lượng của thanh. Lấy g = 10m/s². 

Sự phân bố electron vào các lớp và phân lớp căn cứ vào

Một trong những đặc trưng cơ bản nhất của cơ chế thị trường là gì?

Sentence rewriting: Digital reading may be better for students than print reading.

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.

Dear Lily,

a. I also read that you’ve been getting into photography. That’s fantastic! Have you thought about joining a local photography club? I bet it would be a great way to meet other enthusiasts and improve your skills.

b. I hope this letter finds you well! I’ve been thinking about our last conversation about trying new hobbies, and I wanted to share some exciting things I’ve discovered.

c. Recently, I started taking a pottery class, and it has been such a rewarding experience! It’s so satisfying to create something with my hands. 

d. By the way, I’m planning to attend a craft fair next month. Maybe we could go together. It would be fun to explore and see what others are creating.

e. Let me know what you think! I can’t wait to hear about your photography adventures.

Take care and talk soon!

Chế độ, chính sách của nước Cộng hoà xã hội chủ nghĩa Việt Nam về kinh tế, văn hoá, xã hội, giáo dục, khoa học, công nghệ và môi trường được quy định ở chương nào trong Hiến pháp 2013?

Read the following advertisement and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 1 to 6.

Discover the Future of Tech with SmartGadgets

• Experience (1)___________like never before with our smartphones that redefine connectivity.

• Our (2)_____________ will enhance your daily life and keep you ahead of the curve.

• Join thousands of customers (3)________with their purchases and enjoy unparalleled performance.

• Show the features (4)_________ your customers that truly set you apart from the competition.

• Don’t miss out on this (5)_______-in-a-lifetime opportunity to upgrade your tech.

• Start (6)_________the benefits of advanced technology today, or wait for the future to catch up!

With SmartGadgets, you're not just purchasing a product; you're investing in a lifestyle. Explore our collection now!

Hạn chế của nguồn lao động nước ta hiện nay là gì?

Lệnh nào sau đây dùng để nhận biết kiểu dữ liệu của biến trong python?