Answer : The final temperature of gas will be, 149 K
Explanation :
Charles' Law : It is defined as the volume of gas is directly proportional to the temperature of the gas at constant pressure and number of moles.
![V\propto T](https://tex.z-dn.net/?f=V%5Cpropto%20T)
or,
![\frac{V_1}{V_2}=\frac{T_1}{T_2}](https://tex.z-dn.net/?f=%5Cfrac%7BV_1%7D%7BV_2%7D%3D%5Cfrac%7BT_1%7D%7BT_2%7D)
where,
= initial volume of gas = 1.55 L
= final volume of gas = 753 ml = 0.753 L
= initial temperature of gas = ![32^oC=273+32=305K](https://tex.z-dn.net/?f=32%5EoC%3D273%2B32%3D305K)
= final temperature of gas = ?
Now put all the given values in the above formula, we get the final temperature of the gas.
![\frac{1.55L}{0.753L}=\frac{305K}{T_2}](https://tex.z-dn.net/?f=%5Cfrac%7B1.55L%7D%7B0.753L%7D%3D%5Cfrac%7B305K%7D%7BT_2%7D)
![T_2=149K](https://tex.z-dn.net/?f=T_2%3D149K)
Therefore, the final temperature of gas will be, 149 K
Answer:
A) A solid salt dissolves in water.
Explanation:
A solid, like a salt, dissociates into ions as it dissolves in liquid. The particles (ions) become more spaced apart and with greater randomness. This is increasing entropy.
Option A is incorrect because phenol exists in liquid state at room temperature and its boiling point is 181 °C.
Option B is incorrect because there is no ether linkage in phenol. Its chemical formula is Ph-OH.
Option C is correct. As the chemical formula cited above contains hydroxyl group (i.e. -OH).
Option D can be considered incorrect because only one derivative of phenol (<span>Guaiacol</span>)is used as flavoring agent in whisky.
I believe it is D. <span>Radiation is the only form of heat transfer that can travel through the vacuum of space.
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