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\(a_1,m_{CaCO_3}=0,25.100=25(g)\\ a_2,m_{SO_2}=\dfrac{3,36}{22,4}.64=9,6(g)\\ a_3,m_{H_2SO_4}=\dfrac{9.10^{23}}{6.10^{23}}.98=147(g)\)
\(a.n_{CO_2}=\dfrac{m_{CO_2}}{M_{CO_2}}=\dfrac{4,4}{44}=0,1\left(mol\right)\\ \Rightarrow V_{CO_2}=n_{CO_2}.22,4=0,1.22,4=2,24\left(l\right)\\ n_{O_2}=\dfrac{m_{O_2}}{M_{O_2}}=\dfrac{3,2}{32}=0,1\left(mol\right)\)
\(\Rightarrow V_{O_2}=n_{O_2}.22,4=0,1.22,4=2,24\left(l\right)\)
\(n_{H_2}\) = 2mol
=>\(V_{H_2}\) = 2. 22,4 = 44,8l
\(n_{O_2}\) = 0,0875 mol
=>\(V_{O_2}\) = 0,0875 . 22,4 = 1,96l
\(n_{CO_2}\) = 0,5 mol
=>\(V_{CO_2}\) = 0,5 .22,4 = \(11,2\left(l\right)\)
\(n_{O_2}\) = \(0,2\left(mol\right)\)
=>\(V_{O_2}\) = 0,2 . 22,4 = \(4,48\left(l\right)\)
b) Ta có:
\(n_{NH_3}=\dfrac{6.10^{23}}{6.10^{23}}=1\left(mol\right)\\ n_{O_2}=\dfrac{3.10^{23}}{6.10^{23}}=0,5\left(mol\right)\\ \Sigma n_{hh}=1+0,5=1,5\left(mol\right)\\ V_{hh}=1,5.22,4=33,6\left(l\right)\)
a) \(n_{NaOH}=\dfrac{8}{40}=0,2\left(mol\right)\)
b) \(n_{N_2}=\dfrac{1,8.10^{23}}{6.10^{23}}=0,3\left(mol\right)\)
=> \(m_{N_2}=0,3.28=8,4\left(g\right)\)
c) \(n_{CO_2}=\dfrac{8,8}{44}=0,2\left(mol\right)=>V_{CO_2}=0,2.22,4=4,48\left(l\right)\)
d) \(n_{H_2}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\)
=> Số phân tử H2 = 0,15.6.1023 = 0,9.1023
e) \(n_{O_2}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\)
f) \(n_{Cl_2}=\dfrac{3,6.10^{23}}{6.10^{23}}=0,6\left(mol\right)\)
=> VCl2 = 0,6.22,4 = 13,44(l)
g) \(n_{O_2}=\dfrac{6,72}{22,4}=0,3\left(mol\right)\)
=> mO2 = 0,3.32 = 9,6(g)
h) \(n_{K_2O}=\dfrac{18,8}{94}=0,2\left(mol\right)\)
=> Số phân tử K2O = 0,2.6.1023 = 1,2.1023
i) \(n_{CaO}=\dfrac{11,2}{56}=0,2\left(mol\right)\)
=> Số phân tử CaO = 0,2.6.1023 = 1,2.1023
nHCl = 0,2.1,5 = 0,3 (mol)
=> mHCl = 0,3.36,5 = 10,95(g)
a) Gọi số mol N2, O2 trong 6,72l khí A lần lượt là a, b
=> \(\left\{{}\begin{matrix}28a+32b=8,8\\a+b=\dfrac{6,72}{22,4}=0,3\end{matrix}\right.\)
=> \(\left\{{}\begin{matrix}a=0,2\left(mol\right)\\b=0,1\left(mol\right)\end{matrix}\right.\)
\(\left\{{}\begin{matrix}\%V_{N_2}=\dfrac{0,2}{0,3}.100\%=66,67\%\\\%V_{O_2}=\dfrac{0,1}{0,3}.100\%=33,33\%\end{matrix}\right.\)
\(\left\{{}\begin{matrix}\%m_{N_2}=\dfrac{28.0,2}{8,8}.100\%=63,64\%\\\%m_{O_2}=\dfrac{32.0,1}{8,8}.100\%=36,36\%\end{matrix}\right.\)
b)
\(n_A=0,3\left(mol\right)\)
\(\Rightarrow n_{CO_2}=0,3\left(mol\right)\)
\(\Rightarrow m_{CO_2}=0,3.44=13,2\left(g\right)\)
c) 2,2g A có thể tích là 1,68 lít
=> \(V_{H_2}=1,68\left(l\right)\)
a.
\(m_{Al}=0.5\cdot27=13.5\left(g\right)\)
\(m_{CO_2}=\dfrac{6.72}{22.4}\cdot44=13.2\left(g\right)\)
\(m_{N_2}=\dfrac{5.6}{22.4}\cdot28=7\left(g\right)\)
\(m_{CaCO_3}=0.25\cdot100=25\left(g\right)\)
b.
\(m_{hh}=\dfrac{3.36}{22.4}\cdot2+\dfrac{5.6}{22.4}\cdot28+0.2\cdot44=16.1\left(g\right)\)