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a) mN = 0,5 .14 = 7g.
mCl = 0,1 .35.5 = 3.55g
mO = 3.16 = 48g.
b) mN2 = 0,5 .28 = 14g.
mCl2 = 0,1 .71 = 7,1g
mO2 = 3.32 =96g
c) mFe = 0,1 .56 =5,6g mCu = 2,15.64 = 137,6g
mH2SO4 = 0,8.98 = 78,4g.
mCuSO4 = 0,5 .160 = 80g
a)
mN = 0,5 . 14 = 7(g)
mCl = 0,1 . 35,5 = 3,55(g)
mO = 3 . 16 = 48 (g)
b)
mN2 = 0,5 . 28 = 14(g)
mCl2 = 0,1 . 71 = 7,1(g)
mO2 = 3 . 32 = 96(g)
c)
mFe = 0,1 . 56 = 5,6(g)
mCu = 2,15 . 64 = 137,6(g)
mH2SO4 = 0,8 . 98 = 78,4(g)
mCuSO4 = 0,5 . 160 = 80(g)
Áp dụng công thức : m = n*M
=> mN = 0,5 * 14 = 7 (g)
=> mN2 = 0,5 * 28 = 14 (g)
=> mFe = 0,1 * 56 = 5,6 (g)
=> mCl = 0,1 * 35,5 = 3,55 (g)
=> mCl2 = 0,1 * 71 = 7,1 (g)
=> mO2 = 3 * 32 = 96 (g)
=> mO = 3 * 16 = 48 (g)
a) mN = 0,5 . 14 = 7 g; mCl = 0,1 . 35,5 = 3,55 g; mO = 3 . 16 = 48 g;
b) = 28 . 0,5 = 14 g;
= 71 . 0,1 = 7,1 g;
= 32 . 3 = 96 g
c) mFe= 56 . 0,1 = 5,6 g; mCu = 64 . 2,15 = 137,6 g;
= (2 + 32 + 64) . 0,8 = 78,4 g;
= (64 + 32 + 64) . 0,5 = 80 g
a) mN = 0,5 .14 = 7g.
mCl = 0,1 .35.5 = 3.55g
mO = 3.16 = 48g.
b) mN2 = 0,5 .28 = 14g.
mCl2 = 0,1 .71 = 7,1g
mO2 = 3.32 =96g
c) mFe = 0,1 .56 =5,6g mCu = 2,15.64 = 137,6g
mH2SO4 = 0,8.98 = 78,4g.
mCuSO4 = 0,5 .160 = 80g
Câu 1
\(m_{HNO_3}=0,3.63=18,9\left(g\right)\)
\(m_{CuSO_4}=1,5.160=240\left(g\right)\)
\(m_{AlCl_3}=2.133,5=267\left(g\right)\)
Câu 2
a) \(V_{N_2}=3.22,4=67,2\left(l\right)\)
\(V_{H_2}=0,45.22,4=10,08\left(l\right)\)
\(V_{O_2}=0,55.22,4=12,32\left(l\right)\)
b) \(V_{hh}=\left(0,25+0,75\right).22,4=22,4\left(l\right)\)
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) \(m_{Na}=n.M=0,3.23=6,9\left(g\right)\)
\(m_{O_2}=n_{O_2}.M_{O_2}=0,3.32=9,6\left(g\right)\)
b) \(m_{HNO_3}=n_{HNO_3}.M_{HNO_3}=1,2.63=75,6\left(g\right)\)
\(m_{Cu}=n.M=0,5.64=32\left(g\right)\)
c) \(m_{KNO_3}=n.M=0,125=0,125.101=12,625\left(g\right)\)
\(m_{KMnO_4}=n.M=0,125.158=19,75\left(g\right)\)
\(m_{KClO_3}=n.M=0,125.122,5=15,3125\left(g\right)\)
Câu 3:
\(n_{Fe}=\dfrac{m}{M}=\dfrac{28}{56}=0,5mol\)
\(n_{Cu}=\dfrac{m}{M}=\dfrac{64}{64}=1mol\)
\(n_{Al}=\dfrac{m}{M}=\dfrac{5,4}{27}=0,2mol\)
Câu 4:
a)
mN=n.M=0,5.14=7 gam
mCl=n.M=0,1.35,5=3,55 gam
mO=n.M=3.16=48gam
b)
\(m_{N_2}=0,5.28=14gam\)
\(m_{Cl_2}=0,1.71=7,1gam\)
\(m_{O_2}=3.32=96gam\)
c)
mFe=0,1.56=5,6 gam
mCu=2,15.64=137,6 gam
\(m_{H_2SO_4}=0,8.98=78,4gam\)
\(m_{CuSO_4}=0,5.160=80gam\)