gái hay trai

mk dc ko

nữ nhoa

💖💖💖

ban hoi j v?

Rêu tản, rêu sừng, rêu than. :))

Chữ hợi hẹp nên khó nhìn, bn cho to ra nhé

Cũng ko khác cho lắm

PTHH: Na₂SO₃ + 2HCl ---> 2NaCl + H₂O + SO₂

Ta có: \(n_{SO_2}=\dfrac{6,2}{22,4}\approx0,3\left(mol\right)\)

Theo PT: \(n_{HCl}=2.n_{SO_2}=2.0,3=0,6\left(mol\right)\)

Ta có: \(C_{M_{HCl}}=\dfrac{0,6}{V_{dd_{HCl}}}=0,2M\)

=> \(V_{dd_{HCl}}=3\left(lít\right)\)

Bạn có thể tham khảo ở phần C lớn trong đường link này nhé :

https://thuthuat.taimienphi.vn/thuyet-minh-ve-quy-tac-luat-le-cua-mot-hoat-dong-the-thao-72542n.aspx

Đặt công thức đơn giản của đồng clorua là \(Cu_xCl_y\left(x,y\inℕ^∗\right)\)

Ta có : \(n_{Cu}=\frac{3,2}{64}=0,05\left(mol\right)\)

\(PTHH:2xCu+yCl_2\rightarrow^{t^o}2Cu_xCl_y\)

\(\left(mol\right):0,05\rightarrow\)               \(\frac{0,05}{x}\)

\(\Rightarrow m_{Cu_xCl_y}=m.M=\frac{0,05}{x}.\left(64x+35,5y\right)\)\(hay:6,75=\frac{0,05}{x}.\left(64x+35,5y\right)\)

\(\Leftrightarrow6,75x=0,05.\left(64x+35,5y\right)\)\(\Leftrightarrow6,75x=3,2x+1,775y\Leftrightarrow6,75x-3,2x=1,775y\)

\(\Leftrightarrow3,55x=1,775y\Rightarrow\frac{x}{y}=\frac{1,775}{3,55}=\frac{1}{2}\)

Vậy công thức đơn giản của đồng clorua là \(CuCl_2\)

late next friday so she can't go the the party

is too expensive so I can't buy it
it was hot, I turned on the air conditioner
to the club because of her illness
her exam because she worked hard
on the air conditioner because it was hot
the hard rain, we stay at home
being sick, she couldn't go to shcool yesterday
Nga's tiredness after her trip, she went to bed early
waking up late, Na didn;t have time for breakfast