Thermo chemistry help 1. You put solid dry ice into an empty 2 liter pop bottle

Question

Thermo chemistry help

1. You put solid dry ice into an empty 2 liter pop bottle and screw on the lind. when the dry ice sublimes and the gases warm to room termperature, the bottle will explode if you have added enough dry icel Calculate the minimum number if grams if dry ice required to cause an explision given the bottle will rupture when its internal pressure reaches 11 bar (gage)

2. When buildings have large exhaust fans, exterior doors can be difficult to open due to a pressure difference between inside and outside. Do yiu think you could open ta 3- by 7ft door if the inside pressure were 1 in. of water (vacuum) ?

3. A twin bladede turbine has rotors with diameter 91 m. The reported average power of the turbine is 2.5 MW. How does this compare with the best possible at your location ?. The Betz limit is 16/27. Assume for your location the average air temperature is 10 C and the average wind velocity, V is 24km/hr

Explanation / Answer

Q1. p*v=n*r*t

p=11bar=11*.987 atm =10.857atm

v=2lt

t=298k(25c)

r=.0821

n=.8875 mole

1mol =18gram

mass of water=15.97 gram ~~=mass of ice.

2)Inches of water :It is defined as the pressure exerted by a column of water of 1 inch in height at defined conditions. For example, 39

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