Đáp án: Hòa tan hoàn toàn 11,1 gam hỗn hợp bột gồm al,fe bằng dd HCL thấy thoát ra 6,72 lít khí(đktc) - Đáp án Giải thích các bước giải Fe + 2HCl -> fecl2 + h2 0,3mol <- 0,3mol nh2 = 672/234 = 03mol mFe = 27*03= 81g => mAl = 111-81=3g

Lan Trần

2 năm trước

Hòa tan hoàn toàn 11,1 gam hỗn hợp bột gồm al,fe bằng dd HCL thấy thoát ra 6,72 lít khí(đktc)

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Duy Huynh

2 năm trước

Đáp án:

Giải thích các bước giải:

Fe + 2HCl -> fecl2 + h2

0,3mol. <-. 0,3mol

nh2 = 6.72/23.4 = 0.3mol

mFe = 27*0.3= 8.1g

=> mAl = 11.1-8.1=3g

giangnth

2 năm trước

Đáp án:

24,32% và 75,68%

Giải thích các bước giải:

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Hòa tan hoàn toàn 11,1 gam hỗn hợp bột gồm al,fe bằng dd HCL thấy thoát ra 6,72 lít khí(đktc)

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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Hòa tan hoàn toàn 11,1 gam hỗn hợp bột gồm al,fe bằng dd HCL thấy thoát ra 6,72 lít khí(đktc)

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.