hjumilikm

2 năm trước

Tính khối lượng nhôm clorua AlCl3 tạo thành được khi cho 70g nhôm tác dụng với 219g axit clohđric HCl thu được 6g khí hidro,biết sau phản ứng nhôm dư 26g

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Trang Luong Nguyen

2 năm trước

Đáp án:

mAl= 80g

Giải thích các bước giải:

nH2= 6/2= 3 mol

PTHH:

2Al+ 6HCl→ 2AlCl3+ 3H2↑

2 3

mAl= 2.27+26=80 g

hanhtran1810

2 năm trước

Đáp án:

Giải thích các bước giải:

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Tính khối lượng nhôm clorua AlCl3 tạo thành được khi cho 70g nhôm tác dụng với 219g axit clohđric HCl thu được 6g khí hidro,biết sau phản ứng nhôm dư 26g

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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Tính khối lượng nhôm clorua AlCl3 tạo thành được khi cho 70g nhôm tác dụng với 219g axit clohđric HCl thu được 6g khí hidro,biết sau phản ứng nhôm dư 26g

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.