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Chemistry
Chemistry
Problem
A certain radio-isotope shows the change
Z
A
X
→
Z
−
4
A
−
8
Y
+
2
4
He
(
t
1
/
2
=
10
day
)
^{A}_{Z}X \rightarrow ^{A-8}_{Z-4}Y + ^{4}_{2}\text{He} \quad (t_{1/2} = 10 \text{ day})
Z
A
X
→
Z
−
4
A
−
8
Y
+
2
4
He
(
t
1/2
=
10
day
)
If 2g-atom of
Z
A
X
^{A}_{Z}X
Z
A
X
are taken, pressure of He (in atm) accumulated in a sealed tube of 12 litre in 20 day at 300K is..... (
R
=
0.08
litre atm K
−
1
mol
−
1
R = 0.08 \text{ litre atm K}^{-1} \text{ mol}^{-1}
R
=
0.08
litre atm K
−
1
mol
−
1
)
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