Agas‑filled weather balloon with a volume of 58.0 l is held at ground level, where the atmospheric pressure is 771 mmhg and the temperature is 24.0 ∘c . the balloon is released and rises to an altitude where the pressure is 0.0571 bar and the temperature is −6.94 ∘c . calculate the weather balloon's volume at the higher altitude.

The balloon's volume at higher altitude is 935.4 L

Explanation:

Step 1: Data given

Volume = 58.0 L

Atmospheric pressure = 771 mmHg = 1.01447 atm

Temperature = 24.0 °C = 297.15 Kelvin

When the balloon is released , it has a pressure of 0.0571 bar (= 0.0563533185 atm)

Temperature = -6.94 °C ( = 266.21 Kelvin)

Step 2: Calculate the volume

P*V=n*R*T   with n and R are constant

(P1*V1)/ T1 = (P2*V2)/ T2

with P1 = 771 mmHg = 1.01447 atm

with V1 = 58.0 L

with T1 = 24.0 °C = 297.15 Kelvin

with P2 = 0.0571 bar (= 0.0563533185 atm)

with V2 = TO BE DETERMINED

with T2 = -6.94 °C ( = 266.21 Kelvin)

V2 = (P1 * V1 * T2 )/( T1 * P2)

V2 = (1.01447 atm * 58.0 L * 266.21 K) / (297.15 K * 0.0563533185 atm)

V2 =935.4 L

The balloon's volume at higher altitude is 935.4 L

a. they are both space stations

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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.