Câu 7: Cho 32,5 gam kim loại R hóa trị II phản ứng vừa đủ với dung dịch axit clohidric HCl thu được 11,2 lít khí ở đktc. Xác định kim loại R. (Al = 27; Fe = 56; Mg = 24; Cu = 64; Ag = 108; Zn = 65; O = 16; H = 1; Cl = 35,5; S = 32)

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.