Given: 500 grams of air at STP. (STP or Standard Temperature Pressure; where in T = 0°C , Pabs = 1 atm). Determine the following a. Volume of the air in cubic meters b. If 20 kJ of heat is added at constant pressure determine the final temperature in C
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- Thermal energy is added to 180 g of water at a constant rate for3.5 min, resulting in an increase in temperature of 12 C°. What isthe heating rate, in joules per second?Compute the heat transfer through the air condition if the outside temperature is outside temperature, To = 5 degrees Celsius, inside temperature = 20 degrees Celsius, in a room with length 5 m, width of 6 m and height of 4 m. A typical volume flow for ventilation is 20 liters/second or 0.02 cubic meter/s, how much time will it take to replace all air within this room? Then, compute total thermal power flux out of the room through the ventilation? Given, Cp = 1005 J/khK, and roho = 1.2 kg/cubic.a chemist is doing some measurements with a thermometer that is accurate to 1 degree k and a pressure gauge that is accurate to 2 bars. Using the equation for the ideal gas law, V=C T/P, where C is a constant and V is volume, T is temperature in Kelvin and P is pressure in bars, how far off on volume(Leave C in the problem and ignore it) can he be assuming max error on each measurement assuming he measure 13 bars and 340 degrees K?
- A precise steel tape measure has been calibrated at 14°C.At 37°C, (a) will it read high or low, and (b) what will bethe percentage error?How much heat must be removed from 5.00 grams of steam at positive 125°C to ice at negative 25°C? Express your answers in Joules. Note that the specific heat of ice, liquid water and steam are 2108 J/kgK, 4187 J/kgK and 1996 J/kgK, respectively. While the latent heat of fusion and latent heat of vaporization of water are 334x103 J/kg and 2256x103 J/kg, respectively.It’s so cold outside! Last night, the temperature decreased by 10°C, or ____ °K. *Answer is not 283.15 K!!
- Let's say you park your car outside overnight during the winter, when you first parked your car the temperature was 29.0 degrees C but overnight the temperature drops to -7.0 degrees C. If your initial gauge pressure was 200kPa, what will be the gauge pressure (in KPa) after the change in temperature?A balloon contains 3.1 liters of nitrogen gas at a temperature of 84K and a pressure of 101 kPa. If the temperature of the gas is allowed to increase to 29°C and the pressure remains constant, what volume will the gas occupy? (2 sig fig)A 1.28-kg sample of water at 10.0 is in a calorimeter. You drop a piece of steel with a mass of 0.385 kg at 215 into it. After the sizzling subsides, what is the final equilibrium temperature? (Make the reasonable assumptions that any steam produced condenses into liquid water during the process of equilibration and that the evaporation and condensation don't affect the outcome, as we'll see in the next section.)
- As the very first rudiment of climatology, estimate the temperature of Earth. Assume it is a perfect sphere and its temperature is uniform. Ignore the greenhouse effect. Thermal radiation from the Sun has an intensity (the "solar constant" S) of about 1370 W/m2 at the radius of Earth's orbit. (a) Assuming the Sun's rays are parallel, what area must S be multiplied by to get the total radiation intercepted by Earth? It will be easiest to answer in tens of Earth's radius, R. (b) Assume that Earth reflects about 30% of the solar energy it intercepts. In other words, Earth has an albedo with a value of A=0.3 . In terms of S, and R, what is the rate at which Earth absorbs energy from the Sun? (c) Find the temperature at which Earth radiates energy at the same rate. Assume that at the infrared wavelengths where it radiates, the emissivity e is 1. Does your result show that the greenhouse effect is important? (d) How does your answer depend on the area of Earth?A person taking a reading of the temperature in a freezer in Celsius makes two mistakes: first omitting the negative sign and then thinking the temperature is Fahrenheit. That is, the person reads xC as xF . Oddly enough, the result is the correct Fahrenheit temperature. What is the original Celsius reading? Round your answer to three significant figures.What is the percent error of thinking the melting point of tungsten is 3695 instead of the correct value of 3695 K?