hỏa tan hoàn toàn 10,5g hỗn hợp CuO,Zn cần dùng 73,5g dd H2SO4 loãng,dư người ta thu đc 2.24 lít khí viết PTHH tính khối lượng mỗi chất trong hỗn hợp ban đầu tính nồng độ % H2SO4 đã 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.