Two evacuated bulbs of equal volume are connected by a tube of negligible volume. One of the bulbs is placed in a constant-temperature bath at 245 K and the other bulb is placed in a constant-temperature bath at 350 K . Exactly 5 mol of an ideal gas is injected into the system. Calculate the final number of moles of gas in each bulb.

The final number of moles of gas in each bulb is 2.06 and 2.94 moles.

Explanation:

The number of moles can be calculated using Ideal Gas Law:

    (1)

Where:

P: is the pressure

V: is the volume

n: is the number of moles

R: is the ideal gas constant  

Solving equation (1) for n:

For bulb 1 we have:

and for bulb 2:

Dividing n₁ by n₂:

Since V₁ = V₂ and P₁ = P₂ we have:

  (2)

Also, we have that 5 mol of an ideal gas is injected into the system:

   (3)

By entering equation (3) into (2) we have:

   (4)

(4) into (3):

Therefore, the final number of moles of gas in each bulb is 2.06 and 2.94 moles.

I hope it helps you!

they are made of gases.

they have a spherical shape.

they make energy through fusion.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.