Hòa tan hoàn toàn 18g hỗn hợp natricacbonnat và natriclorua bằng đ ãit clohidric dư sau pứng thu được 2.688lit khí ở đktc tính khối lượng muối thu đc sau pứng xảy ra hoàn toàn ( na=23,mg=24, ca=40, fe=56,cu=64,cl=35.5)

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.