Cho 2g hỗn hợp gồm Fe và một kim loại Z hóa trị II vào dung dịch HCl dư thì thu được 1,12 lít khí (đktc). Xác định kim loại Z biết rằng 500ml dung dịch HCl hòa tan dư 4,8g kim loại đó

Part 2: Use the suggested words to write an e-mail to Nick (10pts)

 Hi Nick,

 1. Thank you / your e-mail .

 2. Now, I/ tell/you/my house .

 3. I/ live/parents and younger sister / town house .

 4. It /big. There / six rooms / a livingroom / a kitchen/ two bedrooms/ two bathrooms.

 5. We/moving/an apartment/soon. What / you ?

 6. Where / you / live ? Tell / me /your next e-mail .

  Bestwishes,

  Mi

lúc 7 giờ một ô tô đi từ a đến b với vận tốc 50km/h đi được 30p thì dừng 30p rồi tiếp tục đi vs vận tốc cũ. lúc 8h ô tô cũng đi từ a đuổi theo xe thứ nhất với vận tốc 75km/h. Xác định nơi 2 xe gặp nhau và gặp nhau lúc mấy h?

tìm các cặp số nguyên dương(x;y) thỏa mãn: 1/x + 1/y = 1/3

tìm nghiệm nguyên của phương trình x^2-4x+2y-xy+9=0

XI. Read the passage carefully, then do the tasks.
Scientists say it could take at least 1,500 years before humans make contact with
species of aliens, or for them to communicate with or find us. Astronomers from Cornell
University in the USA combined two existing theories about the possibility of life existing on
other planets to form a new equation. One of these theories is the Fermi Paradox described
by physicist Enrico Fermi in 1950. This States that while billlons of Earth-like planets exist
in our galaxy, not One has made contact with Earth yet. The other is the principle, which
suggests that because there is life on Earth, it will typically exist on Earth-like planets
throughout the universe.
“We haven’t heard from aliens yet, as space is a big place, but that doesn’t mean no
one is out there,” study author and Cornell astronomy student Evan Solomonides said.
According to Solomonides, extraterrestrials could have received signals from Earth.
However, he suggests that ET would not have been able to decode them. He said they would
need to decode the light waves into sounds and analyse 3,000 human languages to
understand any messages. He said that signals from Earth have only reached about 8,500
stars and that the Milky Way galaxy alone contains 200 billion stars. He added: “If we stop
listening or looking, we may miss the signals, so we should keep looking.”
A. Decide whether the following statements are true (T) or false (F).
1. Scientists say humans are unlikely to hear from aliens for at least 1,500 years.
2. Cornell astronomers examined 20 different theories on whether aliens exist.
3. One theory that was looked at was from a physicist.
4. Another theory said there is life on Earth so there will be on other planets.
5. Solomonides said aliens couldn’t receive signals from Earth as space is a big place.
6. He said aliens would need to decode 3,000 languages to understand human message.
7. So far Earth’s broadcast signals have reached around 8,500 stars.
8. The researcher suggested we stop looking for alien life
 mọi người ơi giúp mik vs mik cảm ơn rất nhiều

Mọi người giúp em giải với ạ

giúp em câu này gấp với ạ

I. Choose the word or phrase (a, b, c or d) that best fits the blank space in each sentence.

 1.As the drug ……………, the patient got better.

a. force    b. influence     c. action      d. take effect

2 .Young volunteers often help the sick or the aged to clean …………… their houses.

a. on         b. off                 c. up             d. in

3.Jim . …………… her on passing the final exams.

a. thanked     b. prevented     c. congratulated        d. warned

II. Rewrite the sentences so that they are nearest in meaning to the sentence printed before them.

1 I offered to help her but she said “No, thanks” (turned)

She...................................................................................

2 I would prefer you not to phone me at work. (rather)

I...........................................................................................

3 He is determined to campaign for his son’s freedom. (intention)

He has..........................................................................................

4 “It is not worth worrying about the past” I told him. (point)

I told him that......................................................................................

5 I tried as hard as I could, but I just couldn’t get the money.(matter)

No..........................................................................................................