Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a/ 2Al + 3S -to-> Al2S3
b/ Fe + S -to-> FeS
c/ Pb + S -to-> PbS
d/ 2Na + S -to-> Na2S
a/ 2Al + 3S -to-> Al2S3
b/ Fe + S -to-> FeS
c/ Pb + S -to-> PbS
d/ 2Na + S -to-> Na2S
\(Mg+S\rightarrow\left(t^o\right)MgS\)
\(Zn+S\rightarrow\left(t^o\right)ZnS\)
\(Fe+S\rightarrow\left(t^o\right)FeS\)
\(2Al+3S\rightarrow\left(t^o\right)Al_2S_3\)
Phương trình hóa học:
Mg + S → MgS
Fe + S → FeS
Zn + S → ZnS
2Al + 3S → Al2S3
Phương trình hóa học:
\(Mg+S\rightarrow MgS\)
\(Fe+S\rightarrow FeS\)
\(Zn+S\rightarrow ZnS\)
\(2Al+3S\rightarrow Al_2S_3\)
a)
\(3Fe+2O_2\underrightarrow{t^o}Fe_3O_4\)
\(C+O_2\underrightarrow{t^o}CO_2\)
\(2Mg+O_2\underrightarrow{t^o}2MgO\)
\(S+O_2\underrightarrow{t^o}SO_2\)
b)
\(2C_2H_2+5O_2\underrightarrow{t^o}4CO_2+2H_2O\)
\(H_2S+\dfrac{3}{2}O_2\underrightarrow{t^o}SO_2+H_2O\)
\(2FeS+\dfrac{7}{2}O_2\underrightarrow{t^o}Fe_2O_3+2SO_2\)
\(a,3Fe+2O_2\rightarrow\left(t^o\right)Fe_3O_4\\ C+O_2\rightarrow\left(t^o\right)CO_2\\ 2Mg+O_2\rightarrow\left(t^o\right)2MgO\\ S+O_2\rightarrow\left(t^o\right)SO_2\\ b,2C_2H_2+5O_2\rightarrow\left(t^o\right)4CO_2+2H_2O\\ 2H_2S+3O_2\rightarrow\left(t^o\right)2SO_2+2H_2O\\ 4FeS+7O_2\rightarrow\left(t^o\right)2Fe_2O_3+4SO_2\)
\(Mg+S\underrightarrow{t^o}MgS\\ Zn+S\underrightarrow{t^o}ZnS\\ Fe+S\underrightarrow{t^o}FeS\\ 2Al+3S\underrightarrow{t^o}Al_2S_3\)
\(a,2Fe+3Cl_2\buildrel{{t^o}}\over\to 2FeCl_3\\ 2:3:2\\ b,4Al+3O_2\buildrel{{t^o}}\over\to 2Al_2O_3\\ 4:3:2\\ c,2H_2+O_2\buildrel{{t^o}}\over\to 2H_2O\\ 2:1:2\\ d,CuO+CO\buildrel{{t^o}}\over\to Cu+CO_2\\ 1:1:1:1\\ e,2Na+2H_2O\to 2NaOH+H_2\\ 2:2:2:1 \)
\(2Al+3S\underrightarrow{t^0}Al_2S_3\)
\(Fe+S\underrightarrow{t^0}FeS\)
\(Pb+S\underrightarrow{t^0}PbS\)
\(2Na+S\underrightarrow{t^0}Na_2S\)
a) 2 Al + 3 S -to-> Al2S3
b) Fe + S -to-> FeS
c) Pb + S -to-> PbS
d) 2 Na + S -to-> Na2S
\(S+O_2\rightarrow\left(t^o\right)SO_2\\ 4Al+3O_2\rightarrow\left(t^o\right)2Al_2O_3\\ 2Mg+O_2\rightarrow\left(t^o\right)2MgO\)
Đọc tên sản phẩm:
SO2 : Lưu huỳnh dioxit
Al2O3: Nhôm oxit
MgO: Magie oxit
Câu 1 :
a,
\(K+O_2\underrightarrow{^{to}}K_2O\)
\(2Ca+O_2\underrightarrow{^{to}}2CaO\)
\(3Fe+2O_2\underrightarrow{^{to}}Fe_3O_4\)
\(C+O_2\underrightarrow{^{to}}CO_2\)
\(S+O_2\underrightarrow{^{to}}SO_2\)
b,
\(CH_4+2O_2\underrightarrow{^{to}}CO_2+2H_2O\)
\(C_2H_4+3O_2\underrightarrow{^{to}}2CO_2+2H_2O\)
\(C_2H_2+\frac{5}{2}O_2\underrightarrow{^{to}}2CO_2+H_2O\)
\(2CO+O_2\underrightarrow{^{to}}2CO_2\)
Câu 2 :
\(S+Zn\underrightarrow{^{to}}ZnS\)
\(3S+2Al\underrightarrow{^{to}}Al_2S_3\)
\(S+Mg\underrightarrow{^{to}}MgS\)
\(S+Cu\underrightarrow{^{to}}CuS\)
\(S+Fe\underrightarrow{^{to}}FeS\)
Bài 1 :
\(d_{A/H2}=17\Leftrightarrow M_A=17.2=34\left(\frac{g}{mol}\right)\)
\(d_{A/kk}=0,55\Leftrightarrow M_A=0,55.29=15,95\left(\frac{g}{mol}\right)\)
\(d_{A/H2S}=0,425\Leftrightarrow M_A==0,425.34=14,45\left(\frac{g}{mol}\right)\)
Bài 2:
\(S+Zn\underrightarrow{^{to}}ZnS\)
\(3S+2Al\rightarrow Al_2S_3\)
\(S+Mg\underrightarrow{^{to}}MgS\)
\(S+Cu\underrightarrow{^{to}}CuS\)
\(S+Fe\underrightarrow{^{to}}FeS\)