Viết phương trình hóa học của các sơ đồ phản ứng sau (ghi rõ điều kiện nếu có):
a) CH4 + Cl2 (tỉ lệ mol 1:1) →
b) C2H4 + H2O →
c) CaC2 + H2O →
d) C2H5OH + Na →
e) CH3COOH + NaOH →
g) (RCOO)3C3H5 + NaOH →
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: Mẩu natri tan dần trong nước, mẩu natri tan và quay tròn, có xuất hiện khí không màu thoát ra, khí đó là khí hidro
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Read and write T[True] or F[False]:
My name is Phong,i'm 10 years old,i study at Primary school.Today is sunday and i not go to the school.I,Nam,Mai,Peter,Hoa,Tony and Linda go to the zoo.Hoa and Mai want to see monkeys because they're funny and friendly.Nam and Tony want to see elephants because they're quite and big.Peter and Linda want to see kangaroos because they're faster.I want to see bears because they're big.This zoo is so good!
a)Phong is 10 years old.True
b)Phong and his friends go to library.False
c)Hoa and Mai want to see monkeys because they,re funny and friendly.True
d)Nam and Tony don't want to see elephant because they,re quite and big.False
e)Peter and Linda want to see kangaroos because they,re scary.False
f)Phong want to see bears because they're big.True
Read and write T[True] or F[False]:
My name is Phong,i'm 10 years old,i study at Primary school.Today is sunday and i not go to the school.I,Nam,Mai,Peter,Hoa,Tony and Linda go to the zoo.Hoa and Mai want to see monkeys because they're funny and friendly.Nam and Tony want to see elephants because they're quite and big.Peter and Linda want to see kangaroos because they're faster.I want to see bears because they're big.This zoo is so good!
a)Phong is 10 years old. T
b)Phong and his friends go to library. F
c)Hoa and Mai want to see monkeys because they,re funny and friendly. T
d)Nam and Tony don't want to see elephant because they,re quite and big. F
e)Peter and Linda want to see kangaroos because they,re scary. F
f)Phong want to see bears because they're big. T
- CuO
Đồng (ll) oxit --> Hợp chất hóa học
- MgCl2
Magie Clorua --> Hợp chất hóa học
- SO3
Lưu huỳnh trioxit --> hợp chất hóa học
- Fe(OH)2
Sắt (ll) hiddroxxxit --> Hợp chất hóa học
.....
mắt sẽ có biểu hiện cay mắt , đỏ mắt , ngứa rát và cũng có nhiều người dụi mắt để giảm cảm giác đó
Find and correct the mistakes
I can't speak English, and so does my younger sister.
( Không được có 2 liên từ )
Sửa lại :
I can't speak English, and does my younger sister.
what the heo
a) CH4 + Cl2 (tỉ lệ mol 1:1) → CH3Cl + HCl ( đk: ánh sáng)
b) C2H4 + H2O → C2H5OH ( mt: H+)
c) CaC2 + 2H2O → C2H2 + Ca(OH)2
d) 2C2H5OH + 2Na → 2C2H5ONa + H2
e) CH3COOH + NaOH → CH3COONa + H2O
g) (RCOO)3C3H5 + NaOH → 3RCOONa + C3H5(OH)3 + 3H2O