Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
đừng có lứa nhé thằng thứ4 hắn chẳng bỏ ra đông nào mà hắn còn bỏ túi 7đ của 3 bạn kia
mà bai nay cung hay thiêt
CuO + CO -to-> Cu +CO2 (1)
MO + CO -to-> M +CO2 (2)
3Cu + 8HNO3 --> 3Cu(NO3)2 +2NO +4H2O (3)
3M +8HNO3 --> 3M(NO3)2 +2NO + 4H2O (4)
nHNO3=0,2(MOL)
theo (3,4) : nNO=1/4nHNO3=0,05(mol)
=>VNO(đktc)=1,12(l)
theo (1,2,3,4) :nCuO,MO=3/8nHNO3=0,075 (mol)
mà nCuO:nMO=1:2
=> nCuO=0,025(mol)
nMO=0,05(mol)
=>mCuO=2(g)(g)=>mMO=2,8(g)
=>MM=\(\dfrac{2,8}{0,05}=56\)(g/mol)
=> M:Fe
Hi everybody . My name is Nhu Y, I am 11 years old and I am a student of grade 6B junior high school in Hai Lam. My favorite subject is English. My favorite sport is badminton, .... I usually watch TV in my free time. I go to school from Monday to Saturday. I always do my homework every morning. I love my family . My family has 7 people: three, me, 3 brothers, 1 head and me. My husband is a farmer, my mother too.My first brother is an electrician, his second brother is a mechanic, his third brother is a bricklayer. My sister is a worker. and i am a student, ...
Hok tốt
# MissyGirl #
Dịch là:
Hi everybody . My name is Nhu Y, I am 11 years old and I am a student in grade 6B Hai Lam secondary school. My favorite subject is English. My favorite sport is badminton, .... I usually watch TV in my free time. I go to school Monday through Saturday. I always do my homework every morning. I love my family. My family has 7 people: three, mother, 3 brother, 1 sister and me. My father is a farmer, so is my mother. My first brother is an electrician, his second brother is a chameleon, his third brother is a nephew. My sister is a worker. And I'm a student, ...
Hk tốt
bn go dau gium mk di!!!
Nằm ngủ 12 tiếng đồng hồ ..... Sau đó mở một trong hai cánh cửa thứ hai hoặc thứ ba ..... Cứ bình tĩnh vì nó đói quá chết hết rồi !