Một lượng khí hydrogen có \({T_1} = 500\;{\rm{K}},{p_1} = {10^5}\;{\rm{N}}/{{\rm{m}}^2}\) được làm nóng đến \({T_2} = 1000\;{\rm{K}}.\) Coi thể tích, khối lượng khí hydrogen không đổi. Tìm áp suất \({p_2}\) của khí hydrogen.

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

I couldn’t help admiring the way he managed to finish the programme even after such a bad fall.

Cation R²⁺ có cấu hình electron ở phân lớp ngoài cùng là 2p⁶. Vị trí của R trong Bảng tuần hoàn là

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.

(16)____

Cho các ý sau đây:  

(1) Có chứa hệ enzyme làm nhiệm vụ tổng hợp lipid

(2) Có cấu tạo tương tự như cấu tạo của màng tế bào

(3) Là một hệ thống ống và xoang dẹp phân nhánh thông với nhau

(4) Phân chia tế bào chất thành các xoang nhỏ (tạo ra sự xoang hóa)

(5) Có chứa hệ enzyme làm nhiệm vụ tổng hợp protein

Trong các ý trên có mấy ý là đặc điểm chung của mạng lưới nội chất trơn và mạng lưới nội chất hạt?

Tập nghiệm \(S\) của bất phương trình \({x^2} - x - 6 \le 0\)?

Cho tam giác \(ABC\) có \(\hat{A}={{45}^{\circ }},\,AB=6,\,\hat{B}={{75}^{\circ }}\). Độ dài cạnh \(BC\) bằng

Ở nước ta, những nơi nào có lượng mưa lớn nhất?

1. No matter who we are or where we are from, we only have 24 hours each day to get things done. Some people seem to make the most of their time, using it to achieve their goals and dreams. Others feel that life is passing them by and they aren’t accomplishing anything. If you are in the latter group, it is not too late to turn things around. By implementing a few simple hacks, you can start getting better results very quickly.

2. If you want to become more productive, it pays to learn about the Pareto principle (which is also known as the 80-20 rule). It states that for most tasks, 80 percent of the results we get come from 20 percent of the work we do. For example. 80 percent of the company sales usually come from 20 percent of customers. Therefore, the trick is to focus your efforts on the key 20 percent of actions that truly matter to greatly improve your results.

3. In some cases, people may be busy from morning to night but still seem to get nothing done. In this situation, the problem might be that clear goals haven’t been set. To fix this, set some time aside to list the things you want to achieve in life. Then, select the top three or four that you want to focus on for the next year. Look at your goals every night before bedtime and ask yourself what are the next actions to accomplish each day. Then, promise yourself that you will finish these tasks no matter how busy you get. If possible try completing the tasks first thing in the morning so you are assured of success.

4. Another common mistake regarding productivity is not considering our energy levels. If we try to work around the clock, we will eventually get tired and quit. Everyone needs time to sleep, eat, socialize with friends, and unwind from the stress of the day. To make sure you don’t burn out, be sure to schedule some time for breaks and fun activities into your schedule every day. Finally, no matter how difficult your goals may seem, remember the old saying that “a journey of a thousand miles begins with a single step”.

Which of the following statements does the author support most?

When hearing the news, Tom tried his best to keep a _______ on his surprise.

Đối với động cơ xăng 4 kì, ở kì nén, xupap sẽ:

Khi cho vài giọt dung dịch Sudan III vào ống nghiệm chứa dịch hạt lạc thì hiện tượng gì sẽ xảy ra?

a. This encourages more companies to adopt environmentally responsible practices and helps to create a greener economy.

b. We can look for companies that use sustainable materials and production methods.

c. Supporting eco-friendly businesses is an excellent way to improve the environment.

d. For example, buying clothes made from recycled fabrics or products with minimal packaging helps to promote a circular economy.

e. When we choose to support these businesses, we are sending a clear message that we value sustainability.

Cặp dấu [ ] dùng để?

Ảnh nào sau đây có độ sâu màu là 1?

Cho \(\text{sin}\alpha =\frac{2}{3}\) với \({{0}^{\circ }}<\alpha <{{90}^{\circ }}\).

Trong trường hợp vay thế chấp mà không thể trả nợ ngân hàng, thì người vay phải chịu trách nhiệm nào sau đây?

Nhiệt độ môi trường thường tăng khi nước ngưng tụ. Hiện tượng này liên quan đến

Một lò xo có chiều dài tự nhiên bằng 15cm. Lò xo được giữ cố định tại một đầu, còn đầu kia chịu một lực kéo bằng 4,5N. Khi ấy lò xo dài 18cm. Độ cứng của lò xo bằng

Khi nói về ưu điểm của phương pháp nuôi cấy mô thực vật, phát biểu nào sau đây sai?