Cho 9,2 g hon hop kim loai gom Al va Zn tac dung voi dung dich HCl du thu duoc 5,6 lit khi hidro o dktc. Tinh % ve khoi luong cua moi kim loai trong hon hop
dot chay hoan toan 6,7gam hop chatX chua C,H,N,O bang khong khi vua du thu duoc 11gam CO2;6,3gam nuoc va 34,72lit khi N2(dktc).Xac dinh cong thuc phan tu cua X biet cong thuc don gian trung voi cong thuc phan tu
De dot chay 16g mot chat Xcan dung 44,8lit khi oxi (đktc) thu duoc khi CO2va hoi nuoc theo ty le mol la 2:1 .tinh khoi luong khi Co2 va khoi luong H2O tao thanh
1/De hoa tan 2,4 gam oxit cua 1 kim loai hoa tri 3 can dung 2.19 gam HCl.Xac dinh oxit tren
2/Cho 18 gam 1 kim loai hoa tri 3 tac dung het voi 11,2 lit khi o2(dktc).Xac dinh ten kim loai
Cho 11,2 gam Fe tac dung voi dung dich HCl. Tinh:
a) The tich khi H2 thu duoc o dktc.
b) Khoi luong HCl phan ung.
c) Khoi luong FeCl2 tao thanh.
xac dinh cthh cua hop chat giua nguyen to x voi o co %x=43,67% boet x co hoa tri v trong hop chat voi o
dot nong 1,35(g) bot nhom trong khi clo du sau phan ung thu duoc nhom clorua (ALCL 3)
a, lap phuong trinh phan ung hoa hoc xay ra
b, tinh khoi luong cua nhom clorua thu duocva the tich khi clo tham gia (dktc)
Cho0.7 gam 1 kim loai A vao dd H2SO4 loang, du. Sau khi PU xay ra hoan toan thu duoc 0.28 lit H2(dktc). Hay xac dinh ten kim loai A
1/ Cho 0.7 gam 1 kim loai A vao dd H2SO4 loang, du. Sau khi PU xay ra hoan toan thu duoc 0.28 lit H2(dktc). Hay xac dinh ten kim loai A