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![](https://rs.olm.vn/images/avt/0.png?1311)
$a) V = n .22,4 = 0,35.22,4 = 7,84(lít)$
$b) n_{Ca_3(PO_4)_2} = \dfrac{62}{310} = 0,2(mol)$
c) Số nguyên tử Na = $3.6.10^{23} = 18.10^{23}$ nguyên tử
\(a.V_{SO_2\left(dktc\right)}=n.22,4=0,35.22,4=7,84\left(l\right)\\ b.n_{Ca_3\left(PO_4\right)_2}=\dfrac{m}{M}=\dfrac{62}{310}=0,2\left(mol\right)\)
c, Số nguyên tử là: 3.6.1023 = 18.1023
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(n_C=\dfrac{18}{12}=1,5\left(mol\right)\)
b) \(m_{NaCl}=0,25.58,5=14,625\left(g\right)\)
c) \(n_{N_2}=\dfrac{14}{28}=0,5\left(mol\right)=>V_{N_2}=0,5.22,4=11,2\left(l\right)\)
d) Tổng số mol = 1,5 + 0,25 + 0,5 = 2,25
a) \(n_C=\dfrac{m}{M}=\dfrac{18}{12}=1,5\left(mol\right)\)
b) \(M_{NaCl}=23+35,5=58,5\left(\dfrac{g}{mol}\right)\)
\(m_{NaCl}=n.M=0,25.58,5=14,625\left(g\right)\)
c) \(n_{N_2}=\dfrac{m}{M}=\dfrac{14}{28}=0,5\left(mol\right)\)
\(V_{N_2\left(đktc\right)}=n.22,4=0,5.22,4=11,2\left(l\right)\)
d) Tổng số mol = 1,5 + 0,25 + 0,5 = 2,25 (mol)
![](https://rs.olm.vn/images/avt/0.png?1311)
$\rm a) n_{Al(NO_3)_3} = \dfrac{m}{M} = \dfrac{85,2}{213} = 0,4 (mol)$
$\rm b) V_{NO_2(đkc)} = n.24,79 = 0,015.24,79 = 0,37185(l)$
$\rm c)m_{C_{12}H_{22}O_{11}} = n.M = 0,5.342 = 171 (g)$
$\rm d)m_{C_6H_{12}O_6} = n.M = 0,6.180 = 108(g)$
$\rm \Rightarrow m_{hh} = m_{C_{12}H_{22}O_{11}} + m_{C_6H_{12}O_6} = 171 + 108 = 279 (g)$
![](https://rs.olm.vn/images/avt/0.png?1311)
4.
a) \(V_{SO_2}=0.5\cdot22.4=11.2\left(l\right)\)
b) \(V_{CH_4}=\dfrac{3.2}{16}\cdot22.4=4.48\left(l\right)\)
c) \(V_{N_2}=\dfrac{0.9\cdot10^{23}}{6\cdot10^{23}}\cdot22.4=3.36\left(l\right)\)
5.
a) \(m_{Al}=0.1\cdot27=2.7\left(g\right)\)
b) \(m_{Cu\left(NO_3\right)_2}=0.3\cdot188=56.4\left(g\right)\)
c) \(m_{Na_2CO_3}=\dfrac{1.2\cdot10^{23}}{6\cdot10^{23}}\cdot106=21.2\left(g\right)\)
d) \(m_{CO_2}=\dfrac{8.96}{22.4}\cdot44=17.6\left(g\right)\)
e) \(m_K=0.5\cdot2\cdot39=39\left(g\right)\\ m_C=0.5\cdot12=6\left(g\right)\\ m_O=0.5\cdot3\cdot16=24\left(g\right)\)
a, \(V_{O_2}=0,35.22,4=7,84l\)
b, \(n_{Al\left(OH\right)_3}=\dfrac{23,4}{78}=0,3mol\)
c, Số nguyên tử của Na \(=2,5.6.10^{23}=1,5.10^{24}\)