Question

In: Physics

If you have a cube of air exactly 1 cubic meter in volume at 25°C and...

  1. If you have a cube of air exactly 1 cubic meter in volume at 25°C and atmospheric pressure,
    1. How much does it weigh (absolute weight, don’t worry about impact of surrounding air) in units of lbmass and N?
    2. If the air is cooled to 10°C, what happens to my cube?

Solutions

Expert Solution

Weight of the cube is

Volume of cube

Mass of the cube

Using ideal gas equation,

     

Weight of the cube is

Pressure   

Temperature

Molar mass of air

Mass of cube is

-------------------

If the air is cooled to

Pressure

Using ideal gas equation,

, Pressure is constant , so

As the temperature decreases at constant pressure, Volume of the cube decreases.

------------


Related Solutions

The volume of a large cube is 64 cubic inches. A new shape is formed by...
The volume of a large cube is 64 cubic inches. A new shape is formed by removing a smaller cube from one corner of the larger cube. What is the surface area of the new shape?
A hot air balloon has a volume of 65,00 cubic feet of hot air. The balloon...
A hot air balloon has a volume of 65,00 cubic feet of hot air. The balloon is at sea level on a standard day. If the temperature of the hot air in the balloon is 1100F, determine the lifting force of the balloon.
670 meter Cubic Cupper ball at 104°C is thrown into a lake which is at 19°C...
670 meter Cubic Cupper ball at 104°C is thrown into a lake which is at 19°C determine the amount of heat loss by the ball after it reaches a thermal equilibrium with the lake ,base your calculations on the room temperature The answer should be -195.6 kj Please explain each stepin words in details Thank you
One cubic meter of ethanol and 1 m3 of water are mixed together. Determine, (a) The...
One cubic meter of ethanol and 1 m3 of water are mixed together. Determine, (a) The composition of the resulting mixture in mass fractions. (b) The composition in mole fractions. (c) The volume of the resulting mixture (d) The composition as volume %.
In a supermarket, air at atmospheric pressure and 25 °C is supplied to an air handling...
In a supermarket, air at atmospheric pressure and 25 °C is supplied to an air handling unit through a rectangular duct with a cross section of 0.5 m x 0.1 m. The air handling unit will distribute 2/3 of the air to the large shopping area of the supermarket at 25 °C, and it will cool the remaining air to -5 °C and distribute it to a walk-in refrigerator. To avoid frictional pressure losses, the average air velocity in the...
A cube of side s = 2m sits 1 meter from the origin along the y-axis,...
A cube of side s = 2m sits 1 meter from the origin along the y-axis, as shown. An electric field E = Eo(1+ y/s) j passes through the cube, where Eo = 100 N/C. The charge enclosed in the cube is a) 6.20 nC b) 5.31 nC c) 4.43 nC d) 3.54 nC e) 0.00 nC
Air at 25 C and 750mmHg has a dew point of 16C. If you want to...
Air at 25 C and 750mmHg has a dew point of 16C. If you want to remove 50% of the initial moisture in the air (at a constant pressure of 750 mmHg), to what temperature should you cool the air?
The radius is 1/3 meter greater than the height. The volume is 98/9ππ cubic meters. For the following exercises, find the dimensions of the right circular cylinder described.
For the following exercises, find the dimensions of the right circular cylinder described.The radius is 1/3 meter greater than the height. The volume is 98/9ππ cubic meters.
A rectangular storage container with an open top is to have a volume of 16 cubic...
A rectangular storage container with an open top is to have a volume of 16 cubic meters. The length of its base is twice the width. Material for the base costs 15 dollars per square meter. Material for the sides costs 6 dollars per square meter. Find the cost of materials for the cheapest such container.
A rectangular storage container with an open top is to have a volume of 14 cubic...
A rectangular storage container with an open top is to have a volume of 14 cubic meters. The length of its base is twice the width. Material for the base costs 14 dollars per square meter. Material for the sides costs 7 dollars per square meter. Find the cost of materials for the cheapest such container.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT