Question

7. What initial volume of water vapor would have been present at 310 K if the volume now

Answer 1

Answer:

206.3cm³

     

Explanation:

Given parameters:

Initial temperature  = 310K

Final volume  = 360cm³

Final temperature  = 541K

Unknown:

Initial volume  = ?

Solution:

To solve this problem we apply the Charles's law which states that "the volume of a fixed mass of a gas varies directly as its absolute temperature if the pressure is constant".

  Mathematically;

     $\frac{V_{1} }{T_{1} }$ = $\frac{V_{2} }{T_{2} }$

V and T are volume and temperature

1 and 2 are initial and final states

 Insert the parameters and solve for V₁;

                    $\frac{V_{1} }{310}$  = $\frac{360}{541}$  

                    V₁   = 206.3cm³