Phương trình hóa học điều chế nước javen là A. Cl2 + NaOH → NaCl + HClO B. Cl2 + NaOH → NaClO + HCl C. Cl2 + H2O → HCl + HClO D. Cl2 + 2NaOH → NaCl + NaClO + H2O CHỌN ĐÁP ÁN ĐÚNG VÀ CẦN GIẢI THÍCH GẤP NHÉ

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.