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\(a,\text{đ}\text{ề}\\ b,n_{CO_2}=\dfrac{9.10^{23}}{6.10^{23}}=1,5\left(mol\right)\\ m_{CO_2}=44.1,5=66\left(g\right)\\ c,V_{CO_2\left(\text{đ}ktc\right)}=1,5.22,4=33,6\left(l\right)\)
\(nCO2=\dfrac{0.44}{44}=0.01mol\)
\(\Rightarrow V_{CO2}=0.01\times22.4=0.224l\)
\(nH2=\dfrac{0.04}{4}=0.01mol\)
\(\Rightarrow V_{H2}=0.01\times22.4=0.224l\)
=> Tổng thể tích: \(V_{CO2}+V_{H2}=0.224+0.224=0.448\)
\(nCH4=\dfrac{1.12}{22.4}=0.05mol\Rightarrow mCH4=0.05\times16=0.8g\)
\(mO2=0.2\times32=6.4g\)
Tổng khối lượng: mCH4 + mO2 = 0.8 + 6.4 = 7.2g
\(a.n_{CO_2}=\dfrac{6,72}{22,4}=0,3\left(mol\right)\\ \Rightarrow m_{CO_2}=44.0,3=13,2\left(g\right)\\ n_{Cl_2}=\dfrac{1,344}{22,4}=0,06\left(mol\right)\\ \Rightarrow m_{Cl_2}=71.0,06=4,26\left(g\right)\\ b.m_{Na_2O}=62.0,32=19,84\left(g\right)\\ m_{CaCO_3}=100.1,44=144\left(g\right)\)
a) \(n_{CO_2\left(đktc\right)}=\dfrac{6,72}{22,4}=0,3\left(mol\right)\)
\(m_{CO_2}=0,3.44=13,2\left(g\right)\)
\(n_{Cl_2}=\dfrac{1,344}{22,4}=0,06\left(mol\right)\)
\(m_{Cl_2}=0,06.71=4,26\left(g\right)\)
b)\(m_{Na_2O}=0,32.62=19,84\left(g\right)\)
\(m_{CaCO_3}=1,44.100=144\left(g\right)\)
\(n_{CO_2}=\dfrac{24.10^{22}}{6.10^{23}}=0,4\left(mol\right)\)
=> \(V_{CO_2}=0,4.22,4==8,96\left(l\right)\)
1. \(n_{O_2}=\frac{V}{22,4}=\frac{6,72}{22,4}=0,3\left(mol\right)\)
2.
\(n_{CO_2}=\frac{m}{M}=\frac{4,4}{44}=0,1\left(mol\right)\)
\(n_{O_2}=\frac{m}{M}=\frac{3,2}{32}=0,1\left(mol\right)\)
\(V_{HC}=n.22,4=\left(0,1+0,1\right).22,4=4,48\left(l\right)\)
\(a.n_{Na}=\dfrac{4,6}{23}=0,2\left(mol\right)\\ n_{KOH}=\dfrac{8,4}{56}=0,15\left(mol\right)\\ n_{H_3PO_4}=\dfrac{11,76}{98}=0,12\left(mol\right)\\ n_{O_2}=\dfrac{16}{32}=0,5\left(mol\right)\\ b.n_{C_2H_4}=\dfrac{2,24}{22,4}=0,1\left(mol\right)\\ n_{CO_2}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\\ n_{N_2}=\dfrac{10,08}{22,4}=0,45\left(mol\right)\)
\(n_{SO_2}=\dfrac{12,4}{64}=0,19375\left(mol\right)\\ V_{SO_2}=0,19375.22,4=4,34\left(l\right)\)
Số mol CO2: nCO2 = 22 / 44 = 0,5 (mol)
=> Thể tích CO2: VCO2(đktc) = 0,5 x 22,4 = 11,2 (lít)
có phải hỏi = bao nhiu k bn?