H2SO4 + Fe2O3➡....
Những câu hỏi liên quan
Câu 3. Hãy chọn chất thích hợp diễn vào chỗ (. . . . .) và hoàn thành các phương trình hóa học sau:
a) ............ + FeS2 ➡ SO2 + .........
b) HCl + ......... ➡ AgCl + ...........
c) NaCl + ......... ➡ NaOH + Cl2 + ...........
d)NaOH + ....... ➡ NaCl + ................
e) Cu + .......... ➡ CuSO4 + SO2 +H2O
a) \(11O_2+4FeS_2\xrightarrow[t^o]{}8SO_2+2Fe_2O_3\)
b) \(HCl+AgNO_3\rightarrow AgCl+HNO_3\)
c) \(2NaCl+2H_2O\xrightarrow[cmn]{đpdd}2NaOH+Cl_2+H_2\)
d) \(NaOH+HCl\rightarrow NaCl+H_2O\)
e) \(Cu+2H_2SO_{4\left(đ,n\right)}\rightarrow CuSO_4+SO_2+2H_2O\)
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Viết các câu sau đây giống nghĩa của các câu trên nó1 Hanoi is large, bangkok is large and tokyo is the largest➡YOU MUST..........................................................2 how many apples does she want?➡ HOW MANY APPLES WOULD.........................................3 HE DRIVES VERY CAREFULLY➡HE IS.........................................................4 LAN IS THE OLDEST OF THE THREE SISTER➡ LAN HAS...........................................5 LEARNING HOW TO USE A COMPUTER IS VERY EASY➡...
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Viết các câu sau đây giống nghĩa của các câu trên nó
1 Hanoi is large, bangkok is large and tokyo is the largest
➡YOU MUST..........................................................
2 how many apples does she want?
➡ HOW MANY APPLES WOULD.........................................
3 HE DRIVES VERY CAREFULLY
➡HE IS.........................................................
4 LAN IS THE OLDEST OF THE THREE SISTER
➡ LAN HAS...........................................
5 LEARNING HOW TO USE A COMPUTER IS VERY EASY
➡ IT IS................................................
1 Hanoi is large, bangkok is large and tokyo is the largest
➡YOU MUST.......Sai đề...................................................
2 how many apples does she want?
➡ HOW MANY APPLES WOULD.....she want ?....................................
3 HE DRIVES VERY CAREFULLY
➡HE IS.......a careful driver..................................................
4 LAN IS THE OLDEST OF THE THREE SISTER
➡ LAN HAS.....three younger sisters......................................
5 LEARNING HOW TO USE A COMPUTER IS VERY EASY
➡ IT IS................................................
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1. Tokyo is the largest of three cities.
2. How many apples would she want ?
3. He is a careful driver.
4. Lan has two younger sisters.
5. It is very easy to learn how to use a computer
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Câu một mk ghi sai phải là tokyo is ......................
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Fe2O3 + H2SO4 loãng ->
Fe2O3 + H2SO4 đặc nóng ->
1 I havent enjoyed myself so much for years.➡ Its years......2 My father was given his first boat by his parents.➡My fathers parents gave.........3 Although his leg was broken, he managed to get out of the car.➡In spite of........4 Some people like working outdoors more than working inside.➡Ome people prefer......5 He has not been to this stadium before.➡It is.....6 John said, If I were you, I would take a taxi to the hotel➡John suggested.......
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1 I haven't enjoyed myself so much for years.➡ It's years......
2 My father was given his first boat by his parents.➡My father's parents gave.........
3 Although his leg was broken, he managed to get out of the car.➡In spite of........
4 Some people like working outdoors more than working inside.➡Ome people prefer......
5 He has not been to this stadium before.➡It is.....
6 John said, "If I were you, I would take a taxi to the hotel➡John suggested.......
It's years since I enjoyed myself so much
My father's parents gave my father his first boat
In spite of having a broken leg, he managed to get out of the car
Some people prefer working outdoors to working indoors
It is the first time he had been to this stadium
John suggested taking a taxi to the hotel
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Nhóm các chất đều phản ứng với khí hiđrô là:
a. CuO, Fe2O3, H2O
b. CuO, Fe2O3 , O2
c. CuO, Fe2O3, H2SO4
d. CuO, Fe2O3, HCl
e. H2SO4, H3PO4, Ba(OH2)
6 phút trước
Nhóm các chất đều phản ứng với khí hiđrô là:
a. CuO, Fe2O3, H2O
b. CuO, Fe2O3 , O2
c. CuO, Fe2O3, H2SO4
d. CuO, Fe2O3, HCl
e. H2SO4, H3PO4, Ba(OH2)
1 It rained heavily but the children didn't stop the games.(continued)➡It rained heavily
2 I don't know anything about painting pictures.(experience)➡I've got not
Cho m gam hỗn hợp gồm Fe và Fe2O3 tác dụng với dung dịch H2SO4 vừa đủ thu được dung dịch A chứa 55,2 gam muối và 2,24 lit H2. a. Tính m b. Tính khối lượng H2SO4 phản ứngBiết Fe2O3 + H2SO4 ® Fe2(SO4)3 + H2O
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Cho m gam hỗn hợp gồm Fe và Fe2O3 tác dụng với dung dịch H2SO4 vừa đủ thu được dung dịch A chứa 55,2 gam muối và 2,24 lit H2.
a. Tính m
b. Tính khối lượng H2SO4 phản ứng
Biết Fe2O3 + H2SO4 ® Fe2(SO4)3 + H2O
•lập pthh của phản ứng sau
•AgNO3 + NaCl AgCl + NaNO3
•Mg + H2SO4 MgSO4 + H2
•Fe2O3 + CO Fe + CO2
•P + O2 P2O5
•Fe + H2SO4 Fe 2 (SO4)3 + H2
•Fe2O3 + H2 Fe + H2O
•P2O5 + H2O H3PO4
AgNO3 + NaCl --> AgCl + NaNO3
Mg + H2SO4 --> MgSO4 + H2
Fe2O3 + 3CO --> 2Fe + 3CO2
4P + 5O2 --> 2P2O5
2Fe + 3H2SO4 --> Fe2(SO4)3 + 3H2
Fe2O3 + 3H2 --> 2Fe + 3H2O
P2O5 + 3H2O --> 2H3PO4
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Lan is very young. She couldnt do that work............................................
Mai is very tall. She can touch the top of the shelves.........................................
The film was very good. I saw it......................................................
2)using so,too/either,neither to ewrite the following sentences:
Mr Tan doesnt love performing music. Miss Loan doesnt love performing music
➡...................................................
I dont like ride a bike. Loa...
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Lan is very young. She couldn't do that work............................................
Mai is very tall. She can touch the top of the shelves.........................................
The film was very good. I saw it......................................................
2)using so,too/either,neither to ewrite the following sentences:
Mr Tan doesn't love performing music. Miss Loan doesn't love performing music
➡...................................................
I don't like ride a bike. Loan don't ride a bike
➡..................................................
Lan likes playing badminton. Her mother likes playing badminton
➡...............................................
I am reading book. He is reading book
➡....................................................
Lan is very young. She couldn't do that work
-> Lan isn't old enough to do that work.
Mai is very tall. She can touch the top of the shelves
-> Mai is tall enough to touch the top of the shelves.
The film was very good. I saw it many times.
-> The film was so good that I saw it many times.
2)using so,too/either,neither to ewrite the following sentences:
Mr Tan doesn't love performing music. Miss Loan doesn't love performing music
➡ Mr Tan doesn't love performing music and Miss Loan doesn't, either.
I don't like ride a bike. Loan don't ride a bike
➡ I don't like riding a bike and neither does Lan.
Lan likes playing badminton. Her mother likes playing badminton
➡ Lan likes playing badminton and her mother does, too.
I am reading book. He is reading book
➡ I am reading book and so is he.
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