A. 20 gam.
B. 13 gam.
C. 10 gam.
D. 15 gam.
B
Amino axit no
\(\frac{m_{O}}{m_{N}}=\frac{80}{21}\, \, \, \, \, (1)\)\(\frac{m_{O}}{m_{N}}=\frac{80}{21}\, \, \, \, \, (1)\)
\(n_{H^{+}}=n_{N}\, (amino\, axit)\)
\(\Rightarrow n_{N}=0,03 (mol)\)
\(m_{N}=0,03.14=0,42(g)\)
\((1)\Rightarrow m_{O}=\frac{0,42.80}{21}=1,6(g)\)
\(n_{O}=0,1(mol)\)
\(X+O_{2}\rightarrow CO_{2}+H_{2}O+N_{2}\)
\(\left\{\begin{matrix} C: x(mol)\\H:y(mol) \end{matrix}\right.\Rightarrow 12x+y=3,83-1,6-0,42\)
\(12x+y=1,81\, \, \, \, \, (2)\)
\(C\rightarrow CO_{2}\)
x x
\(2H\rightarrow H_{2}O\)
y y/2
BT oxy:
\(\Rightarrow 0,1+2.\frac{3,192}{22,4}=2x+\frac{y}{2}\)
\((2),(3)\Rightarrow \left\{\begin{matrix} x=0,13\\y=0,25 \end{matrix}\right.\)
\(CO_{2}\rightarrow CaCO_{3}\downarrow\)
0,13.100 = 13(g)
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