H2 + O2 = H2O.

h2 +O2  = h2o hay là hoho

Hello. My name is Cao. Let me introduce myself and my family. I'm 18 this year, a student of a school television. Walking and playing with friends is my hobby. I was born and raised in the province HB. My family has 4 people: parents, my, my sister and me. My father is an engineer. My mother was a doctor. 9 years old and my brother is studying in an elementary school. She studied very hard and is one of the best student in her class. On good days, and with spare time, my family often went on to play with grandparents, it is very meaningful and fun. I feel very happy to be alive in this family. I love my family very much. I will try to learn and do well to take care of my family. I hope that my family is happy and there is always the best thing. Thank you for listening to my thoughts. Wishing you a happy day.

 

Tham khảo ạ

There are four people in my family – my parents, my little sister and I. I love them all, but my favorite one is my mother. Her name is Mai, and she is 42 years old at the moment. She works as a manager at a furniture store, therefore she is quite busy. She leaves home at 7 and a half in the morning after making breakfast for the whole family, and she usually comes home late in the evening. She is a beautiful woman with an ideal height, long curly hair and a pair of big round eyes. However, because she spends too much time and effort on her work, she starts to have some signs of old aging such as small wrinkles and freckles on her skin. Since she has to work with many employees, she usually has a serious look on her face, and her voice is a little bit loud. However, she is actually a very nice and outgoing person. She always tries to help the staffs with their work, and she is very devoted to her job. At home, she talks to us in a more gentle voice, and there are very few times when she scolds us. She rarely has time to relax and take care of herself, but some of her favorite things to do when she has any spare time are reading novels, watching roman movies, and chatting with us. I know she works under a lot of pressures, so I always talks to her about funny and interesting things at my school, and she seems to enjoy my stories very much. My mother is such a great woman when she can be both a good supervisor and a good mother. I love her a lot, and she is my goal to strive for my future.

∩ᴛʜɪᴇ̂ɴ_ᴛʜᴀ̂̀ɴ∩ 

CA=canxi

FE=sắt

đáp án là cà phê

là cà phê nha  bạn

1. What do you usually do on Sunday?

2. I'm always early.

3. My mother often goes shopping on weekends.

4.Students never go to school early.

5. They often kick the ball in the morning.

1. what do you usually do on sunday?

2. I always get up early.

3. My mother often goes shopping on weekends.

4.Students are never late for school.

5. they don't usually kick the ball in the morning.

NaHCO₃ + CaCl₂ ----> CaCO3 H2O NaCl CO2 (ko biết đúng hay sai đâu)

HT~~

lớp 3 có Hóa lúc nào zị ???

Kim cương được tạo thành từ cacbon (C) và một số chất khác.

Bơ lạc cũng có rất nhiều cacbon, các nhà khoa học Đức đã thử nghiệm việc tạo ra kim cương bằng bơ lạc và họ đã phần nào thành công.

Nên nếu bạn có bơ lạc nghĩa là bạn đang có kim cương.

@Cỏ

#Forever

OKe bạn

My best friend is Linh. She has been my friend for 5 years. I’ve known her from grade 9 until now.

She helps me a lot when I need her help, such as when I have problems, and she gives me a lot of advice and tells me the truth more than any one..

She has a lot of things that I , such as her great hair and gorgeous smile, and she always makes me happy because she is my real friend.

In conclusion, Sara is my best friend until now, and I really miss her

Trả lời:

Khối lượng nguyên tử gồm khối lượng hạt nhân và khối lượng các electron, nhưng khối lượng electron quá nhỏ so với khối lượng hạt

nhân, nên có thể bỏ qua. Do đó có thể coi khối lượng hạt nhân là khối lượng nguyên tử.

Học tốt

a ko bn a

tôi bị .tôi nỏ xem được tiếng anh lớp 4