Sus Thi Chảnh

2 năm trước

Biết phương trình hóa học biểu diễn sự chuyển đổi sau đây Fe-->Fecl3-->Fe(oh)3-->Fe2o3-->Fe2(so4)3-->Fecl3 Al-->Al2o3-->Alcl3-->Al(oh)3-->Al2o3-->Al

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Nguyen Duong

2 năm trước

2Fe+3Cl2->2FeCL3

FeCl3+3NaOH->3NaCl+Fe(OH)3

2Fe(OH)3->Fe2O3+3H2O

Fe2O3+3H2SO4->Fe2(SO4)3+3H2O

Fe2(SO4)3+3BaCL2->2FeCl3+3BaSO4

4Al+3O2->2Al2O3

Al2O3+6HCL->2AlCl3+3H2O

ALCL3+3NaOH->Al(OH)3+3NaCL

2Al(OH)3->Al2O3+3H2O

2Al2O3->4Al+3O2

Tino Hoàng

2 năm trước

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Biết phương trình hóa học biểu diễn sự chuyển đổi sau đây Fe-->Fecl3-->Fe(oh)3-->Fe2o3-->Fe2(so4)3-->Fecl3 Al-->Al2o3-->Alcl3-->Al(oh)3-->Al2o3-->Al

2 câu trả lời

if you don't wear a helmet , you can't ride your bike => Unless

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

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Biết phương trình hóa học biểu diễn sự chuyển đổi sau đây Fe-->Fecl3-->Fe(oh)3-->Fe2o3-->Fe2(so4)3-->Fecl3 Al-->Al2o3-->Alcl3-->Al(oh)3-->Al2o3-->Al

2 câu trả lời

if you don't wear a helmet , you can't ride your bike => Unless

Choose the best answer.I think you should buy _____ pack of mineral water instead. And you can also buy _____ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______ cookies and soft candies.

Choose the best answer.We should decorate our living room with _____ orange banner. We also need ________ ribbons, balloons, party hats and costume.

Choose the best answer.I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

Đề thi - đề kiểm tra Xem thêm

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.