Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
\(n_{CO_2}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\\ n_{Fe_3O_4}=\dfrac{23,2}{232}=0,1\left(mol\right)\\ 4CO+Fe_3O_4\rightarrow\left(t^o\right)3Fe+4CO_2\\ V\text{ì}:\dfrac{0,1}{1}>\dfrac{0,2}{4}\Rightarrow Fe_3O_4d\text{ư}\\ \Rightarrow n_{Fe}=\dfrac{3}{4}.0,2=0,15\left(mol\right)\\ n_{Fe_3O_4\left(d\text{ư}\right)}=0,1-\dfrac{0,2}{4}=0,05\left(mol\right)\\ m_{r\text{ắn}}=m_{Fe_3O_4\left(d\text{ư}\right)}+m_{Fe}=0,05.232+0,15.56=20\left(g\right)\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) Fe2O3 + 3CO --to--> 3CO2 + 2Fe
b) Theo ĐLBTKL: mFe2O3 + mCO = mCO2 + mFe
=> mCO2 = 16+8,4 - 11,2 = 13,2(g)
c)
\(n_{CO_2}=\dfrac{13,2}{44}=0,3\left(mol\right)\)
VCO2 = 0,3.22,4 = 6,72 (l)
Số phân tử CO2 = 0,3.6.1023 = 1,8.1023
\(a,Fe_2O_3+3CO\xrightarrow{t^o}2Fe+3CO_2\\ b,BTKL:m_{Fe_2O_3}+m_{CO}=m_{Fe}+m_{CO_2}\\ \Rightarrow m_{CO_2}=16+8,4-11,2=13,2(g)\\ c,n_{CO_2}=\dfrac{13,2}{44}=0,3(mol)\\ V_{CO_2}=0,3.22,4=6,72(l)\\ \text{Số phân tử }CO_2:0,3.6.10^{23}=1,8.6.10^{23}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
1) \(C+O_2\rightarrow CO_2\\
C+CO_2\rightarrow2CO\)
2)
\(pthh:C+O_2\rightarrow CO_2\)
=> số mol bằng nhau
\(n_{O_2}=\dfrac{6,4}{16}=0,4\left(mol\right)\)
áp vào pt trên ta có : nCO2 = 0,4 (mol)
=> \(m_{CO_2}=0,4.44=17,6\left(g\right)\)
=> dCO2/H2 = 44/2 = 22
dCO2/H2 = 44/2 = 22
![](https://rs.olm.vn/images/avt/0.png?1311)
a) PTHH:FeO + CO -to-> Fe + CO2
b) Theo ĐLBTKL, ta có:
mFeO+ mCO= mFe + mCO2
=> mCO2=(mFeO + mCO)-mFe= (14+36)-28=22(g)
![](https://rs.olm.vn/images/avt/0.png?1311)
C+O2→CO2
+nC=\(\dfrac{4,8}{12}=0,4\left(mol\right)\)
+Theo PTHH ta có:
-nCO2=nC=0,4(mol)
+mCO2=0,4.44=17,6(gam)
![](https://rs.olm.vn/images/avt/0.png?1311)
a)
\(C + O_2 \xrightarrow{t^o} CO_2\\ n_{CO_2} = n_{O_2} = \dfrac{6,4}{32} = 0,2(mol)\\ \Rightarrow m_{CO_2} = 0,2.44 = 8,8(gam)\)
b)
\(n_C = \dfrac{6}{12} = 0,5(mol)\\ n_{O_2} =\dfrac{19,2}{32} = 0,6(mol)\\ C + O_2 \xrightarrow{t^o} CO_2\)
\(n_C = 0,5 < n_{O_2} = 0,6 \Rightarrow\) Oxi dư.
\(n_{CO_2} = n_C = 0,5(mol)\\ \Rightarrow m_{CO_2} = 0,5.44 = 22(gam)\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(a,\text {Bảo toàn KL: }m_{C}+m_{O_2}=m_{CO_2}\\ \Rightarrow m_{CO_2}=m_{C}+m_{O_2}=16+6=22(g)\\ b,m_{C}=m_{CO_2}-m_{O_2}=44-32=12(g)\)
\(n_C=\dfrac{4,2}{12}=0,35\left(mol\right);n_{O_2}=\dfrac{10,6}{32}=0,33125\left(mol\right)\)
PTHH.C + O2 \(\underrightarrow{t^o}\) CO2
Mol: 0,33125 0,33125
Ta có:\(\dfrac{0,35}{1}>\dfrac{0,33125}{1}\) => C dư,O2 pứ hết
=> \(m_{CO_2}=0,33125.44=14,575\left(g\right)\)
Cảm ơn bạn nha !