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Compute the number of gold atoms per cubic centimeter for a silver-gold alloy that contains 26 wt% Au and 74 wt% Ag. The densities of pure gold and silver are 19.32 and 10.49 g/cm3, respectively.
The concentration of silicon in an iron-silicon alloy is 0.55 wt%. What is the concentration in kilograms of silicon per cubic meter of alloy?
Find the steady volume flow rate of fuel oil into the fuel tank. Estimate the velocity of the fuel oil exiting the filling nozzle.
Determine the thermal efficiency and the required steam flow rate [kg/s] for a reheat-regenerative steam power plant which is to produce 200 MW of electricity.
The computer system by the operator requires 3 minutes what is the maximum number of palletizers one operator can tend with out creating idle time for the palletizer?
The volume of an ideal gas is adiabatically reduced from 241 L to 78.5 L. The initial pressure and temperature are 1.00 atm and 310 K. The final pressure is 4.81 atm.
Calculate the compressibility factor of He in the two cities. (b) calculate the ratio of He volume in Colorado over that in New york.
What is the ratio of e to the average kinetic energy of H2O molecules, assuming the latter is related to temperature in the same way as it is for gases?
The tank is heated to a pressure of 10 bar. Assuming that Xe behaves like an ideal gas with a specific heat ration of 1.7, calculate the final temperature of Xe in degree C.
Assuming the gases to be ideal answer the following a) a vessel contains 7 grams of nitrogen and 11 grams of carbon dioxide at a temperature of 300 k and at 1 atm. what is the density of the gas?
A gas cylinder holds 0.330mol of O2 at 150C and a pressure of 3.30atm. The gas expands adiabatically until the volume is doubled. What is the final pressure? What is the final temperature?
Find the absolute pressure, P, in the cylinder. b) If a mercury manometer is used to measure the pressure in the cylinder, find the height, h, of the mercury column in mm.
At the instant is passes through an altitude of 20,000 ft above sea level, what are the time rate of change of the temp, pressure, and density surrounding the air?
Calculate the minimum volume in cm3 of a pure methanol fuel tank required to run a soldier's uniform for 3 days. The nominal power is 20W. There are 10 cells in the stack in series, and the total st
A spherical ballon with a diameter of 6m is filled with helium at 20C and 200kPa. Determine the mole number and the mass of the helium in the balloon.
The working substance of an engine is 1.00 mol of a diatomic ideal gas. Heating at constant volume to its original pressure. Find the efficiency of this cycle.
What is the current fill rate (i.e., the fraction of demand met from inventory)? b. Assume that the lead-time is reduced to two weeks, while r and Q are unchanged. What is the fill rate?
Determine the mass of air that escaped each tire over the course of the trip. (b) What will the tire pressure be when the air inside the tires (at end of trip) returns to 23oC?
Is there any reason to believe there are two diametrically opposite points on the equator of the earth where the temperatures are exactly the same? Find at least two ways to think about the problem
At state 2, the pressure is 2 atm. Employing the ideal gas equation of state, determine (a) the temperature at state 2 and (b) specific volume at state 3.
Consider the CuAu crystal structure. It can be described as a simple cubic lattice with a basis of Cu (0, 0, 0), Cu (1/2, 1/2, 0), Au (1/2, 0, 1/2), and Au (0, 1/2, 1/2). How many atoms of each typ
Rutile has atoms of element A at the unit cell coordinates (0, 0, 0) and (1/2, 1/2, 1/2) and atoms of element B at (1/4, 1/4, 0), (3/4, 3/4, 0), (3/4, 1/4, 1/2), and (1/4, 3/4, 1/2). How many atoms
Determine the exit temperature and the power input assuming that the air is (a) an ideal gas with constant specific heats and (b) an ideal gas with variable specific heats.
Calculate the change in entropy if 24.7 g of water at 78.4°F is mixed with 15.3 g of alcohol at 106°F. (The specific heat of water at constant presure is 4186 J/kg·K and that of alcoh
While ordinary graphite is weak, graphite fibers are extremely strong when pulled along the fiber axis. Explain in terms of the microstructure and the bonding in graphite.