Hãy tìm thể tích khí ở đktc của:
0,25 mol C O 2
0,25 mol O 2
21g N 2
8,8g C O 2
9.1023 phân tử H 2
0,3.1023 phân tử CO
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
VO2=VCO2=0,25.22,4=5,6(lít)
nN2=0,75(mol)
VN2=22,4.0,75=16,8(lít)
nCO2=0,2(mol)
VCO2=0,2.22,4=4,48(lít)
nH2=\(\dfrac{9.10^{23}}{6.10^{23}}=1,5\left(mol\right)\)
VH2=22,4.1,5=33,6(lít)
nCO=0,05(mol)
VCO=22,4.0,05=1,12(lít)
\(a.V_{CO_2\left(dktc\right)}=0,25.22,4=5,6\left(l\right)\)
\(b.m_{Al_2O_3}=0,5.160=80\left(g\right)\)
\(a_1,m_{CaCO_3}=0,25.100=25(g)\\ a_2,m_{SO_2}=\dfrac{3,36}{22,4}.64=9,6(g)\\ a_3,m_{H_2SO_4}=\dfrac{9.10^{23}}{6.10^{23}}.98=147(g)\)
a) mFeSO4= 0,25.152=38(g)
b) mFeSO4= \(\dfrac{13,2.10^{23}}{6.10^{23}}.152=334,4\left(g\right)\)
c) mNO2= \(\dfrac{8,96}{22,4}.46=18,4\left(g\right)\)
d) mA= 27.0,22+64.0,25=21,94(g)
e) mB= \(\dfrac{11,2}{22,4}.32+\dfrac{13,44}{22,4}.28=32,8\left(g\right)\)
g) mC= \(64.0,25+\dfrac{15.10^{23}}{6.10^{23}}.56=156\left(g\right)\)
h) mD= \(0,25.32+\dfrac{11,2}{22,4}.44+\dfrac{2,7.10^{23}}{6.10^{23}}.28=42,6\left(g\right)\)
hơi muộn nha<3
\(a.\)
\(n_{O_2}=\dfrac{0.15\cdot N}{N}=0.15\left(mol\right)\)
\(m_{O_2}=0.15\cdot32=48\left(g\right)\)
\(V_{O_2}=0.15\cdot22.4=3.36\left(l\right)\)
\(b.\)
\(n_{CO_2}=\dfrac{1.44\cdot10^{23}}{6\cdot10^{23}}=0.24\left(mol\right)\)
\(m_{CO_2}=0.24\cdot44=10.56\left(g\right)\)
\(V_{CO_2}=0.24\cdot22.4=5.376\left(l\right)\)
\(c.\)
\(m_{H_2}=0.25\cdot2=0.5\left(g\right)\)
\(V_{H_2}=0.25\cdot22.4=5.6\left(l\right)\)
\(d.\)
\(m_{CH_4}=1.5\cdot16=24\left(g\right)\)
\(V_{CH_4}=1.5\cdot22.4=33.6\left(l\right)\)
\(e.\)
\(n_{CO_2}=\dfrac{8.8}{44}=0.2\left(mol\right)\)
\(V_{CO_2}=0.2\cdot22.4=4.48\left(l\right)\)
a) VCO2 = 1.22,4 = 22,4l.
VH2 = 2.22,4 = 44,8l.
VO2 = 1,5 .22,4 = 33,6l.
b) Vhh = 22,4.(0,25 + 1,25) = 33,6l.
+ \(M_{CO_2}=12+16.2=44\left(\dfrac{g}{mol}\right)\)
\(n_{CO_2}=\dfrac{m}{M}=\dfrac{11}{44}=0,25mol\)
+ \(n_{H_2}=\dfrac{9.10^{23}}{6.10^{23}}=1,5mol\)
\(V_{H_2\left(đktc\right)}=n.22,4=1,5.22,4=33,6\left(l\right)\)
V C O 2 = n C O 2 . 22,4 = 0,25.22,4 = 5,6 (l)
V O 2 = n O 2 .22,4 = 0,25.22,4 = 5,6 (l)
n N 2 == 0,75(mol)
→ V N 2 = n N 2 .22,4 = 0,75.22,4= 16,8 (l)
n C O 2 == 0,2 (mol)
→ V C O 2 = n C O 2 . 22,4 = 0,2.22,4 = 4,48 (l)
n H 2 ==1,5(mol)
→ V H 2 = n H 2 . 22,4 = 1,5. 22,4 = 33,6 (l)
n C O == 0,05(mol)
→ V C O = n C O . 22,4 = 0,05. 22,4 = 1,12 (l)