Cho 15,2g hh gồm Na2CO3 và NaHCO3 tác dụng với dd ãit clohiđric 20%(d=1,14g/ml) thấy thoát ra 3584ml khí đo ở đktc a)tính phần trăm khối luợng mỗi muối trong hh ban đầu b)tính thể tích dd axit cần dùng

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.