Duration: 2:35

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1

Identify open, closed and isolated system out of
P the following

W
(1) \( \mathrm{CaCO}_{3} \stackrel{\Delta}{\longrightarrow} \mathrm{CaO}+\mathrm{CO}_{2} \uparrow \)
(2) \( \mathrm{CaCO}_{3} \stackrel{\Delta}{\rightleftharpoons} \mathrm{CaO}+\mathrm{CO}_{2} \)
(3) \( \mathrm{H}_{2} \mathrm{O}(l) \stackrel{\Delta}{\rightleftharpoons} \mathrm{H}_{2} O(g) \) in a vacuum flask
(4) \( \mathrm{Zn}+2 \mathrm{HCl} \longrightarrow \mathrm{ZnCl}_{2}+\mathrm{H}_{2} \uparrow \)
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