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Calculate how much more CO2 emission (in g/kg/ton) we can expect per day after 5 years compared to the present emission from cars only in San Jose, while the carbon emission rate per car per day is
Kinetic and potential energy effects are negligible. Determine the heat transfer and work for both processes on a p-v diagram.
What thickness of urethane foam is required to reduce the exterior temperature to 40oC, assuming the convection coefficient is 20 W/m2K for both situations?
Calculate the atomic packing factor for a body centered cubic (b.c.c.) system. Show all the steps. (b) Materials A and B both forms face centered cubic (f.c.c.) structures at room temperature.
With the atmospheric pressure of 99.9 kN/m^2 at 30 degrees Celsius. Determine the column height in meters (and feet) if mercury is used.
Calculate the final equilibrium temperature assumning no heat loss after mixing occurs.
Assuming laminar flow through a needle 1 inch in length, if you need to inject 3cubic centimeters (cc) of medicine into a patient in 15 seconds, what is the pressure difference for the case of a 16
430 cm3 of water at 93°C is mixed with 95 cm3 of water at 16°C. Calculate the final equilibrium temperature, assuming no heat is lost to outside the water. Equilibrium temp?
We have a pumping system that handles dirty fluids with sticky soft particles. For this reason, we are using semi-open impellors on our centrifugal pumps.
Assume that 97% of sulfur entering the plant is converted to sulfur dioxide (SO2). The power plant is equipped with a 80% efficiency SO2 removal unit. Determine the emission rate of SO2 in lb/hr.
2 mol of an idea gas ( = 1.4) expands slowly and adiabatically from a pressure of 4 atm and a volume of 10 L to a final volume of 25 L. The universal gas constant is 8.31451 J/K · mol. What i
Determine the temperature (oC) and the total enthalpy (kJ) when the heating is completed. Sketch the P-v diagram to show the process.
An ideal gas at temperature T0 is slowly com- pressed at constant pressure of 2 atm from a volume of 10 liters to a volume of 2 liters. Then the volume of the gas is held constant while heat is adde
1 mol of oxygen gas is confined to a 6 L vessel at a pressure of 6 atm. Avogadro's number is 6.02214×1023 1/mol. The mass of an O2 molecule is 5.31×10-26 kg. Find the average translational
If the mixture occupies a volume of 0.4 m3, find the masses of the saturated liquid present and the saturated vapor present.
An ideal gas at 16.2 °C and a pressure of 2.56 x 105 Pa occupies a volume of 2.56 m3. (a) How many moles of gas are present? (b) If the volume is raised to 4.71 m3 and the temperature raised to
Calculate the composition, in weight percent, of an alloy that contains 90 kg of Fe, 20 kg of Cr, and 15 kg of Ni. What is the composition of this alloy in atomic percent? Please show your work.
You are asked to make a 500-g rod with the zn-cu-al-sn alloy of 80 at.% Zn, 5 at. % Cu, 10 at. % Al. 5 at. % Sn. How many grams of Zn, Cu, Al, and Sn are required for making this rod?
Methane (CH4) has a tetrahedral structure similar to that of Si02, with a carbon atom of radius 0.77x10-8 cm at the center and hydrogen atoms of radius 0.46x10-8 cm at four of the eight corners.
Find the work done per pound of water during the expansion. Find the heat transfer per pound of water during the expansion. Find the value of the enthalpy of the water after expansion.
Find the specific volume using both a) the IG model, b) the van der Waals model. What is the error incurred by modeling the Blob as an IG? as a van der Waals gas?
Nanowires can be fabricated from ZnO. ZnO has the wurzite structure. How many atoms are there in the conventional unit cell?
The piston mass is 30 kg, its area is .003m^2, and the ambient pressure is 100 kPa. The pin is then removed and the H2O expands rapidly and adiabatically. What is the final state of the H2O?
Find the density and specific volume of air over the range of normal room conditions. Take barometric pressure to vary from 95 kPa to 102 kPa, and temperature to vary from 10oC to 30oC.
If the inner surface temperature of the pipe is maintained at a constant temperature of 150c determine the temperature at The base flange and the rate of heat loss through the flange.