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A balloon filled with 39.1 mol helium has a volume of 876 L at 0.0C and 1.00 atm pressure. The temperature of the balloon is increased to 38.0C as it expands to a volume of 998 L, the pressure remaining constant. Calculate q, w, and E for the helium in the balloon. (The molar heat capacity for helium gas is 20.8 J/*C x mol .)
Is this a reasonable value from a physiologic point of view? Would the patient be considered normal or diabetic?
It is desired to use 28.32 m 3 /min of air (metered at a pressure of 101.3 kPa and 294.1 K) in a process. This amount of air which is at rest enters the fan suction at a pressure of 741.7 mm Hg and a temperature of 366.3 K and is discharged at a pres..
A natural rubber compounded is proposed for a bushing application. Stress analysis indicates that the structure requires a tensile modulus of 5 Mpa. In terms of percentage, how much dicumyl peroxide must be used in the compound to achieve the desired..
How many kilograms of natural gas are flowing through the pipelines per hour ( use different steps required in material balance calculations).
Coal gasification is carried out at 850 °C and 40 atmospheres pressure, by reaction of coal with steam and oxygen. The empirical formula of the coal is roughly CH0.8S0.013. What materials of construction would you recommend for:
The effluent liquid is analyzed and is found to contain 1.5 moles (NH4)2SO3 per mole of NH4HSO3. The heat of formation of (NH4)2SO3 (aq) at 25°C is -890.0 kJ/mol, and that of NH4HSO3 (aq) is -760 kJ/mol. The heat capacities of all liquid solutions..
Using the steam tables estimate cp in (kj/kg k) , for super heated steam and 0.1 Mpas and 700deg c
Plot the system curve on the pump characteristic given in Figure 20.17 and determine the operating point and pump efficiency. Properties of the fluid: density 900 kg/m3, viscosity 1.36 mN m-2 s.
Determine the primary to secondary ratio of the line-to-line voltages and the line currents.
question 1a a receptionist who has been working in a large accountancy firm for eleven months has been complaining of
Use the three-element Kelvin model to describe the stress relaxation of a biomaterial of your choice. Using a stress response curve from the literature, compute the model spring constants K1 and K2 and the viscous damping coefficient b.
A mixture of acetone and isopropanol containing 50 mol% acetone is to be distilled continuously to produce an overhead product containing 80 mol% acetone and a bottoms containing 25 mol% acetone. If a saturated-liquid feed is employed, if the colu..
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