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Những câu hỏi liên quan
16 tháng 2 2018
Sắp xếp :
The cat lies on the hat
Sai thì đừng trách mình nhé ! Nhưng mình nghĩ chắc đúng rồi đó !
H
9 tháng 8 2021
Bài 6 :
$a) M = X + 16.3 = M_{Br} = 80 \Rightarrow X = 32$
$b) M = X + 4.1 = M_{S} = 32 \Rightarrow X = 28$
$c) M = 2X + 32 = 2M_{S} = 2.32 = 64 \Rightarrow X = 16$
9 tháng 8 2021
Bài 6 :
Theo đề ta có : \(\dfrac{M_{X2S3}}{M_{CuSO4}}\)
\(\dfrac{M_{X2S3}}{160}\)
⇒ MX2S3 = 160 - 10 = 150 (dvc)
Có : MX2S3 = 150 (dvc)
2.MX + 3.MS = 150
⇒ 2.MX + 3.32 = 150
⇒ 2.MX + 96 = 150
⇒ 2.MX = 150 - 96 = 54
⇒ MX = \(\dfrac{54}{2}=27\) (dvc)
Vậy nguyên tố x là nhôm
kí hiệu : Al
Chúc bạn học tốt
11 tháng 11 2021
\(\Leftrightarrow n^5+n^2-n^2+1⋮n^3+1\)
\(\Leftrightarrow-n^3+n⋮n^3+1\)
\(\Leftrightarrow n=1\)
14 tháng 8 2019
trả lời : It will scare children's eyes when playing in a dark room
YN
1
1 tháng 2 2022
Bài 2:
Xét ΔABC vuông tại A có \(BC^2=AB^2+AC^2\)
hay BC=10(cm)
Ta có: ΔABC vuông tại A
mà AM là đường trung tuyến
nên AM=BC/2=5(cm)
31 tháng 12 2021
I am in Hanoi. I really like going to the Temple of Literature - Quoc Tu Giam because every time I go there, I learn many interesting things about this place. As far as I know, in 1070, Emperor Ly Thanh Tong built the Temple of Literature to worship Confucius. In 1075, Emperor Ly Nhan Tong built a royal academy to teach his children in the court. Chu Van An can be said to be the best teacher ever at the Royal Academy. During the reign of Emperor Le Thanh Tong, he built the first doctorate steles on each stone turtle. That's what I know about the origin of the Temple of Literature - Quoc Tu Giam
2 tháng 7 2021
N.
2. Mexico City is smaller than Tokyo, but New York is the smallest.
3. New York is wetter than Mexico City, but Tokyo is the wettest.
4. New York is drier than Tokyo, but Mexico City is the driest.
5. Tokyo is cheaper than New York, but Mexico City is the cheapest.
6. Tokyo is more expensive than Mexico City, but New York is the most expensive.
7. Mexico City is hotter than New York, but Tokyo is the hottest.
8. Mexico City is colder than Tokyo, but New York is the coldest.
9. New York is cleaner than Mexico City, but Tokyo is the cleanest.
10. New York is more polluted than Tokyo, but Mexico City is the most polluted.
O.
2. London is as warm as Edinburg.
3. London is not as cloudy as Edinburg.
4. Edinburg isn't as bright as London.
5. London isn't as wet as Edinburg.
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