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When a sample of a gas is heated in a sealed, rigid container from 200. K to 400. K, the pressure exerted by the gas is
(1) decreased by a factor of 2.
(2) increased by a factor of 2.
(3) decreased by a factor of 200.
(4) increased by a factor of 200.



Answer :

pyromorphite
[tex]\frac {p_1} {T_1} = \frac {p_2} {T_2} \\ p_1T_2 = p_2T_1 \\ p_1 \cdot 200 = p_2 \cdot 400 ||: 200 \\ p_1 = p_2 \cdot 2 ||: 2 \\ \frac{1}{2} p_1 = p_2[/tex]

(1) zmniejszyła się o czynnik 2. 
(2) zwiększona o współczynnik 2. 
(3) zmniejszona o współczynnik 200. 
(4) zwiększona o współczynnik 200.




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