2. Cho 7,5 gam hỗn hợp X gồm Mg và Al tác dụng hết với dung dịch HCl dư thu được 7,84 lít khí H2 (ở đktc). Tính % theo khối lượng của Mg trong hỗn hợp X.

Các câu hỏi liên quan

WRITING Complete each of the following sentences with the words or phrases given. (1.25P) Mỵ / sister / and / I / share / same / hobby /. / We / often / go / fish / weekends/. ___________________________________________________________________________ Getting / plenty / rest / really / important /. ___________________________________________________________________________ Minh / think / skating / more / interesting / playing / board games /. ___________________________________________________________________________ You/ do/ the housework/ at the moment ___________________________________________________________________________ Listen / music / in / free / time / is / my / favourite / hobby /. ___________________________________________________________________________ Your friend has the flu. Write an email to give him or her some advice. (1P) You can use some notes below: go out û go to bed early v drink lots of water v check temperature v keep warm v open the windows û do any housework û Rest v You can start with: Dear ………………, I am very sorry to hear that you are ill. My brother is a doctor so he gave me some advice for you. You shouldn’t………………………………………………… Get better soon. Love Your e-mail: _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ THE END