Benzene has the molar mass of 78. It is known that its empirical formula is CH. Find benzene's molecular formula.
CH
C4H4
C6H6
C6H8
Các bn giúp mik nhanh vs ạ mik đg cần gấp! Cảm ơn
Những câu hỏi liên quan
Công thức thực nghiệm(empirical formula) của Acetic acid, Hydrazine, Benzene, Oxalic acid.
Mn ơi giúp mik vs
Find a mistake and correct it:
My brother is a member of the stamp collectors club.
mik cần gấp !
cảm ơn
My brother is a member of the stamp collector's club
stamp collectors club-> stamp collectors' club
lập các phân số bằng nhau từ các số 1,3,9,27,81,làm ơn giúp mik vs ạ mik đg cần gấp ạ xin cảm ơn
- 27/1=81/3 (Ngược lại)
- 3/9=27/81 (Ngược lại)
- 27/9=3/1 (Ngược lại)
- 81/9=27/3 (Ngược lại)
- 1/27=3/81 (Ngược lại)
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\(\dfrac{1}{1}\) = \(\dfrac{3}{3}\) = \(\dfrac{9}{9}\) = \(\dfrac{27}{27}\) = \(\dfrac{81}{81}\)
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Giúp mik vs ạ mik đang cần gấp:
Thêm “for O” trước “to V_o”
1. The milk is too hot. The child can’t drink it.
…………………………………………………………………… ……..
2. This weight is too heavy . We can’t lift it.
…………………………………………………………………………..
3. The piano is too narrow, so they can’t push the piano through that door.
……………………………………………………………………………………………………..
4. The coat is not warm enough. He shouldn’t wear it in winter.
…………………………………………………………………………………………………….
5. This bed is not wide enough for you two. You can’t sl...
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Giúp mik vs ạ mik đang cần gấp:< Thêm “for O” trước “to V_o” 1. The milk is too hot. The child can’t drink it. …………………………………………………………………… …….. 2. This weight is too heavy . We can’t lift it. ………………………………………………………………………….. 3. The piano is too narrow, so they can’t push the piano through that door. …………………………………………………………………………………………………….. 4. The coat is not warm enough. He shouldn’t wear it in winter. ……………………………………………………………………………………………………. 5. This bed is not wide enough for you two. You can’t sleep in this bed. …………………………………………………………………………. 6. He didn’t finish the examination. He didn’t have enough time. ……………………………………………………………………………
The milk is too hot for the child to drink
This weight is too heavy for us to lift
The piano is too narrow for them to push through that door
The coat is too cold for him to wear in winter
This bed is too narrow for you to sleep
câu cuối chưa nghĩ ra =))
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This channel is not as interesting as that one
This channel.......
Tom works hard for the exam. Ana works hard for the exam, too
Tom.....
The students stayed home yesterday.
The students didn't.....
Giúp mik nhanh vs ạ mik đag cần gấp
Các bn giúp mik với ạ.
Mik đang cần gấp ạ
Mik sẽ tick cho 5 bn nhanh nhất và đúng nhất
Cảm ơn các bn nhiều ạ
Mình nhớ câu này mình đã giải rồi, không biết vì lý do gì mà bạn lại xóa đi vậy nhỉ? Và nếu CH đã đăng, yêu cầu bạn không đăng lại lần thứ 2!
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Ai giúp mình với ạ ! mình cần gấp ạ , cảm ơn trc nhen !!!III. Rewrite the sentence so that it has a similar meaning to the original one:Ex: James is the tallest boy in the class.— James is taller than any other boy in the class.16.Milk is the most nourishing food.— Milk is the most nourishing food17.Bombay is the richest city in India.— Bombay is richer than cities in India18.Iron is the most useful metal.— Iron is more useful than other metals19.Shakespeare is the greatest English poet.— Shake...
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Ai giúp mình với ạ ! mình cần gấp ạ , cảm ơn trc nhen !!!
III. Rewrite the sentence so that it has a similar meaning to the original one:
Ex: James is the tallest boy in the class.
—> James is taller than any other boy in the class.
16.Milk is the most nourishing food.
—> Milk is the most nourishing food
17.Bombay is the richest city in India.
—> Bombay is richer than cities in India
18.Iron is the most useful metal.
—> Iron is more useful than other metals
19.Shakespeare is the greatest English poet.
—> Shakespeare is
20.Munnar is the prettiest hill station in India.
—> Munnar is. the prettiest hill station in India
16.Milk is the most nourishing food.
—> Milk is more nourishing than any other food
17.Bombay is the richest city in India.
—> Bombay is richer than any other cities in India
18.Iron is the most useful metal.
—> Iron is more useful than any other metals
19.Shakespeare is the greatest English poet.
—> Shakespeare is greater than any English poet
20.Munnar is the prettiest hill station in India.
—> Munnar is prettier than any other hill station in India
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21 tháng 9 2021 lúc 10:27
I don't buy that novel because it is _______ .(bore)
Ai làm nhanh mik tick cho, Mik cần gấp, xin mọi n giúp !LÀM ơn!
|x+3|≥4
các bn giúp mik vs ạ mik đang cần gấp lắm. Cảm ơn nhìu nha
\(\Rightarrow x+3\ge4\\ \Rightarrow x\ge1\)
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\(\left|x+3\right|\ge4\)
\(\Leftrightarrow\left[{}\begin{matrix}x+3\ge4\\x+3\le4\end{matrix}\right.\)\(\Leftrightarrow\left[{}\begin{matrix}x\ge1\\x\le1\end{matrix}\right.\)
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