Hoàn thành các phương trình hóa học sau (ghi rõ điều kiện, nếu có):

(1) Fe₂(SO₄)₃ + X → K₂SO₄ + Y

(2) FeS + Z → FeCl₂ + T

 (3) FeCl₃ + A → Fe(NO₃)₃ + B

(4) Fe + D(lấy dư) → E + SO₂ + H₂O

Pháp luật quy định ntn về quyền tự do kinh doanh và nghĩa vụ đóng thuế

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.