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pentagon [3]
3 years ago
5

Consider two bulbs seperated by a valce. Both bulbs are amintained at the same temperature. Assume that when the valve between t

he two bulbs is closed, the gases are sealed in their respective bulbs. When the valve is closed, the following data apply:
Bulb A Bulb B
Gas Ne CO
V 2.50L 2.00L
P 1.09 atm 0.73 atm


Assuming no temperature change, determine the final pressure inside the system after the valve connecting the two bulbs is opened. Ignore the volume of the tube connecting the two bulbs.
Chemistry
1 answer:
Juliette [100K]3 years ago
3 0

Answer:

The  pressure is P_f  =  0.93 \  atm

Explanation:

From the question we are told that

   The  volume of  Ne  is  V_N  = 2.50 \ L

    The volume  of  CO is  V_C =  2.00 \  L

    The  pressure of  Ne is  P_N  =  1.09 \ atm

      The  pressure of  CO is P_C =  0.773 \  atm

The  number of  moles of  Ne present is evaluated using the ideal gas equation as

      n_N  =  \frac{P_N  *  V_N}{R T}

=>   n_N  =  \frac{1.09  *  2.50 }{R T} =  \frac{2.725}{RT}

The  number of  moles of  CO present is evaluated using the ideal gas equation as

      n_N  =  \frac{P_C  *  V_C}{R T}

=>   n_N  =  \frac{0.73  *  2.00 }{R T} =  \frac{1.46}{RT}

The  total number of moles of gas present is evaluated as

        n_T  =  n_N  +  n_C

        n_T  =  \frac{2.725}{RT}  +   \frac{1.46}{RT}

      n_T  =  \frac{4.185}{RT}

The  total volume of gas present when valve is opened is  mathematically represented as

                V_T  =  V_N  + V_C

    =>        V_T  =  2.50 + 2.00 =  4.50 \  L

So

  From the ideal gas equation the final pressure inside the system  is mathematically represented as

         P_f  =  \frac{n_T  *  RT }{ V_T}

=>      P_f  =  \frac{[\frac{4.185}{RT} ]  *  RT }{ 4.50}

=>       P_f  =  0.93 \  atm

     

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