1) Phân hủy 16.8g hỗn hợp X gồm NaHCO3 và MgCO3 tạo thành 9.56g hỗn hợp rắn và khí CO2 (đktc) a)Tính %m của mỗi muối trong hỗn hợp X. b) Tính thể tích khí CO2.

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.