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1. Ta có: nSO2 = \(\frac{2,24}{22,4}=0,1\left(mol\right)\)
=> mSO2 = 0,1 x 64 = 6,4 (gam)
nO2 = \(\frac{3,36}{22,4}=0,15\left(mol\right)\)
=> mO2 = 0,15 x 32 = 4,8 (gam)
=> Khối lượng hỗn hợp:mhỗn hợp=mO2 + mSO2 = 6,4 + 4,8 = 11,2g
2. Ta có: nCO2 = \(\frac{4,4}{44}=0,1\left(mol\right)\)
nO2 = \(\frac{3,2}{32}=0,1\left(mol\right)\)
=> Vhỗn hợp(đktc) = ( 0,1 + 0,1 ) x 22,4 = 4,48 (l)
3. Số mol H2O: nH2O = \(\frac{3.10^{23}}{6.10^{23}}=0,5\left(mol\right)\)
Câu 3:
\(n_{H_2O}=\frac{3.10^{23}}{6.10^{23}}=0,5\left(mol\right)\)
a, VO\(_2\) = 0,15 . 22,4 = 3,36 lít
b, V\(CO_2\) = \((\dfrac{48}{44}).22,4\approx24,43\) ( lít )
c, \(V_{SO_2}=\left(\dfrac{16}{64}\right).22,4=5,6\) ( lít )
\(V_{H_2}=\left(\dfrac{18.10^{23}}{6.10^{23}}\right).22,4=67,2\) ( lít )
=> \(V_{hh}=5,6+67,2=72,8\) ( lít )
\(a.n_{CO_2}=\dfrac{m_{CO_2}}{M_{CO_2}}=\dfrac{4,4}{44}=0,1\left(mol\right)\\ \Rightarrow V_{CO_2}=n_{CO_2}.22,4=0,1.22,4=2,24\left(l\right)\\ n_{O_2}=\dfrac{m_{O_2}}{M_{O_2}}=\dfrac{3,2}{32}=0,1\left(mol\right)\)
\(\Rightarrow V_{O_2}=n_{O_2}.22,4=0,1.22,4=2,24\left(l\right)\)
\(n_{H_2}\) = 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, Ta có : nSO2 = 2,24 / 22,4 = 0,1 (mol)
=> mSO2 = n * M = 0,1 * ( 32+16*2)= 6,4 (g)
nO2 = 3,36 / 22,4 = 0,15 (mol)
=> mO2 = 0,15 * 32 = 4,8 (g)
b, Ta có: nCO2 = m / M = 4,4 / (12 +16*2) = 0,1 (mol)
=> VCO2 = n* 22,4 =0,1 *22,4= 2,24 (lít)
nO2 = 3,2 / 32= 0,1 (mol)
=> VO2 = 0,1 *22,4 =2,24 (lít)
c, nN2 = 4,48 / 22,4 = 0,2 (mol)
d, mH2O = 0,5 * (1*2+16) = 9 (g)
nH2SO4 = 19,6 / (1*2+32+16*4)= 3,2 (mol)
e, M h/c A = 8 /0,2=40(g)
f, 1. nO2 = 8/32= 0,25 (mol)
2. số phân tử oxi là : 0,25 *6 *1023 = 1,5*1023 (p. tử)
3. VO2 = 0,25 * 22,4 =5,6 (lít)
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
=> \(V_{H_2}=1,68\left(l\right)\)
\(a.V_{CO_2\left(dktc\right)}=0,25.22,4=5,6\left(l\right)\)
\(b.m_{Al_2O_3}=0,5.160=80\left(g\right)\)
\(1,\\ a,m_{hh}=3.44+2.28=188(g)\\ b,m_{hh}=\dfrac{2,24}{22,4}.64+\dfrac{1,12}{22,4}.32=8(g)\\ 2,\\ a,V_{hh}=(\dfrac{4,4}{44}+\dfrac{0,4}{2}).22,4=6,72(l)\\ b,V_{hh}=(\dfrac{6.10^{23}}{6.10^{23}}+\dfrac{3.10^{23}}{6.10^{23}}).22,4=33,6(l)\)