The oxidation of nitric oxide takes place in an isothermal batch reactor. The reactor is charged with a mixture containing 20.0 volume percent NO and the balance air at an initial pressure of 380 kPa...

Determination of capillary radius by flow measurement, one method for determining the radius of a capillary tube is by measuring the rate of flow of a Newtonian liquid through the tube. Find the...

The spectral, hemispherical emissivity of tungsten may be approximated by the distribution depicted below. Consider a cylindrical tungsten filament that is of diameter D = 0.8 mm and length L = 20...

N-Butane is converted to isobutene in a continuous isomerization reactor that operates isothermally at 149C. The feed to the reactor contains 93 mole% n-butane, 5% isobutene, and 2% HC1 at 149C, and...

Two liquid streams are flowing at constant rates into a blender. One is benzene, which flows at a measured rate of 20.0 L/min, and the other is toluene. The blended mixture enters a storage tank...

The liquid storage tank shown in figure has two inlet streams with mass flow rates w 1 and w 2 and an exit stream with flow rate w 3 . The cylindrical tank is 2.5 m tall and 2 m in diameter. The...

Sketch vo for each network of Fig. 2.177 for the input shown. Would it be a good approximation to consider the diode to be ideal for both configurations? Why? 120 V Si Si E - 20V

Typically, air is heated in a hair dryer by blowing it across a coiled wire through which an electric current is passed. Thermal energy is generated by electric resistance heating within the wire and...

An adult takes roughly 12 breaths each minute, inhaling approximately 500mL with each breath. Oxygen and carbon dioxide are exchanged in the lungs. The amount of nitrogen exhaled equals the amount...

Methanol is formed from carbon monoxide and hydrogen in the gas-phase reaction The mole fractions of the reactive species at equilibrium satisfy the relation where P is the total pressure (atm). K e...

The double toggle mechanism shown is used in a punching machine. Knowing that links AB and BC are each of length 150 mm, determine the couple M required to hold the system in equilibrium when = 20....

Creeping flow between two concentric spheres (Fig. 3B.4). A very viscous Newtonian fluid flows in the space between two concentric spheres, as shown in the figure. It is desired to find the rate of...

If a force of F = 350 N is applied to the handle of the toggle clamp, determine the resulting clamping force atA. F. 70 mm -235 mm- 30 mm 275 mm 30 hm/ 30

Determine the force P on the cable if the spring is compressed a distance when the mechanism is in the position shown. The spring has a stiffness k. Given: = 0.5 in c = 6 in k = 800lb/ft d = 6 in a...

Normal heptane is dehydrocyclicized to toluene and hydrogen in a continuous vapor-phase reaction: C7H16 C6H5CH3 +4 H2 Pure heptanes at 400C is fed to the reactor. The reactor operates isothermally...

A 0.016773-m3 tank contains 1 kg of refrigerant-134a at 110C. Determine the pressure of the refrigerant, using (a) The ideal-gas equation, (b) The generalized compressibility chart, and (c) The...

In one stage of an annealing process, 304 stainless steel sheet is taken from 300 K to 1250 K as it passes through an electrically heated oven at a speed of V, = 10 mm/s. The sheet thickness and...

The three parallel bolting forces act on the circular plate. If the force at A has a magnitude of FA = 200 lb, determine the magnitudes of FB and FC so that the resultant force FR of the system has a...

For each section illustrated, find the second moment of area, the location of the neutral axis, and the distances from the neutral axis to the top and bottom surfaces. Consider that the section is...

Human color vision is produced by the nervous system based on how three different cone receptors interact with photons of light in the eye. These three different types of cones interact with photons...

Three hundred gallons of a mixture containing 75.0 wt% ethanol (ethyl alcohol) and 25% water (mixture specific gravity = 0.877) and a quantity of a 40.0 wt% ethanol60% water mixture (SG = 0.952) are...

A 5.00-wt% aqueous sulfuric acid solution (p = 1.03g/mL) flows through a 45-m long pipe with a 6.0cm diameter at a rate of 87L/min. (a) What is the morality of sulfuric acid in the solution? (b) How...

The two-member frame is pin connected at C, D, and E. The cable is attached to A, passes over the smooth peg at B, and is attached to a load W. Determine the horizontal and vertical reactions at each...

A vertical channel 152 x 76 (see Table A7) has a cantilever beam bolted to it as shown. The channel is hot-rolled AISI 1006 steel. The bar is of hot-rolled AISI 1015 steel. The shoulder bolts are M12...

Express each force in Cartesian vector form. Given: F1 = 400 lb F2 = 600 lb θ1 = 45 deg θ2 = 60 deg θ3 = 60 deg θ4 = 45 deg θ5 = 30 deg F2

Torque required to turn a friction bearing (Fig. 3A.1). Calculate the required torque in lbs- ft and power consumption in horsepower to turn the shaft in the friction bearing shown in the figure. The...

Using a single dimensional equations estimate the number of steps it would take you, walking at your normal stride, to walk from the Earth to Alpha Centauri, a distance of 4.3 light-years. The speed...

Two aqueous sulfuric acid solutions containing 20.0 wt% H 2 SO 4 (SG = 1.139) and 60.0 wt% H 2 SO 4 (SG = 1.498) are mixed to form a 4.00 molar solution (SG = 1.213). (a) Calculate the mass fraction...

A two-stage process is used to separate H 2 S from a gas containing 96% H and 4?? H 2 S by volume. ?The H 2 S is absorbed in a solvent, which is then regenerated by air in a stripping column. The...

The rotation of rod OA about O is defined by the relation ? = 0.5e?0.8t sin 3?t, where ? and t are expressed in radians and seconds, respectively. Collar B slides along the rod so that its distance...

A stream of humid air containing 1.00 mole% H 2 O (v) and the balance dry air is to be humidified to a water content of 10.0 mole% H 2 O. For this purpose, liquid water is fed through a flow meter...

A process instrumentation diagram of a flash drum is shown in Figure. Steam is condensed in a steam coil to vaporize a portion of the liquid feed, and the liquid product is removed by a pump. There...

A composite cylindrical wall is composed of two materials of thermal conductivity k A and k B, which are separated by a very thin, electric resistance heater for which interfacial contact resistances...

The eye bolt is subjected to the cable force F which has a component Fx along the x axis, a component Fz along the z axis, and a coordinate direction angle β. Determine the magnitude of F....

A stainless steel (AISI 304) tube used to transport a chilled pharmaceutical has an inner diameter of 36 mm and a wall thickness of 2 mm. The pharmaceutical and ambient air are at temperatures of 6C...

The cantilever bracket is bolted to a column with three M12 Ã 1.75 ISO 5.8 bolts. The bracket is made from AISI 1020 hot-rolled steel. Find the factors of safety for the following failure...

A thin electrical heater is inserted between a long circular rod and a concentric tube with inner and outer radii of 20 and 40 mm. The rod (A) has a thermal conductivity of k A = 0.15 W/m. K, while...

Determine the magnitude of the resultant force FR = F1 + F2 and its direction, measured counterclockwise from the positive x axis. Given: F1 = 600 N F2 = 800 N F3 = 450 N = 45 deg = 60 deg = 75...

A Howe scissors roof truss is loaded as shown. Determine the force in members DF, DG, and EG. 2 w 2 2 m

During its manufacture, plate glass at 600C is cooled by passing air over its surface such that the convection heat transfer coefficient is h = 5 W/m2 K. To prevent cracking, it is known that the...

An exercise room has eight weight-lifting machines that have no motors and four treadmills each equipped with a 2.5-hp (shaft output) motor. The motors operate at an average load factor of 0.7, at...

The distribution constant for X between n-hexane and water is 8.9. Calculate the concentration of X remaining in the aqueous phase after 50.0 mL of 0.200 M X is treated by extraction with the...

Humid air is to be conditioned in a constant pressure process at 1 atm from 39oC dry bulb and 50 percent relative humidity to 17oC dry bulb and 10.8oC wet bulb. The air is first passed over cooling...

A gas mixture containing 85.0 mole% N2 and the balance n-hexane flows through a pipe at a rate of 100.0m 3 fh, the pressure is 2.00 atm absolute and the temperature is 100C. (a) What is the molar...

The simple band brake is constructed so that the ends of the friction strap are connected to the pin at A and the lever arm at B. If the wheel is subjected to a torque M, determine the smallest force...

N-Hexane is burned with excess air. An analysis of the product gas yields the following dry-basis molar composition: 6.9% CO 2 . 2.1% CO. 0.265% C 6 H 14 (+ O 2 and N 2 ). The stack gas emerges at...

The clamping hooks are used to lift the uniform smooth 500-kg plate. Determine the resultant compressive force that the hook exerts on the plate at A and B, and the pin reaction atC. 80 mm 150 mm- IB

Wet leather containing 61% water enters a continuous tunnel dryer and leaves at a rate of 485lb m /h containing 6.0% water. Dry air enters the dryer at 140F and 1 atm. and the outlet air is at 130F...

Determine by direct integration the moment of inertia of the shaded area with respect to the y axis. y = kx3

How many of the following are found in 15.0kmol of benzene (C 6 H 6 )? (a) Kg C 6 H 6 ; (b) Mol C 6 H 6 ; (c) lb-mole C 6 H 6 ; (d) Mol (g-atom) C; (e) Mol h: (f) g C; (h) Molecules of C 6 H 6 .

A spherical vessel used as a reactor for producing pharmaceuticals has a 5-mm-thick stainless steel wall (k = 17 W/m K) and an inner diameter of D j = 1.0 m. During production, the vessel is filled...

A rectangular bar is cut from an AISI 1018 cold-drawn steel flat. The bar is 60 mm wide by 10 mm thick and has a 12-mm hole drilled through the center as depicted in Table A151. The bar is...

Trichloroethylene, a widely used degreasing solvent for machine parts is produced in a two-step reaction sequence. Ethylene is first chlorinated to yield tetrachloroethane, which is...

A cold air chamber is proposed for quenching steel ball bearings of diameter D = 0.2 m and initial temperature T i = 400C. Air in the chamber is maintained at 15C by a refrigeration system, and the...

Helium is to be compressed from 120 kPa and 310 K to 700 kPa and 430 K. A heat loss of 20 kJ/kg occurs during the compression process. Neglecting kinetic energy changes, determine the power input...

Air entrainment in a draining tank (Figure 3A.7) a molasses storage tank 60 ft in diameter is to be built with a draw-off line 1 ft in diameter, 4 ft from the sidewall of the tank and extending...

Consider the blending system shown in Figure. A feedback control system is used to reduce the effect of disturbances in feed composition, x 1 , n the controlled variable, product composition, x....

A 5.0-m 3 tank is charged with 75.0 kg of propane gas at 25C. Use the SRK equation of state to estimate the pressure in the tank: then calculate the percentage error that would result from the use of...

Evaporation loss from an oxygen tank (a) Liquefied gases are sometimes stored in well-insulated spherical containers vented to the atmosphere. Develop an expression for the steady-state heat transfer...

Locate the center of gravity of the sheet-metal form shown. T1.8 m 1.2 m 0.5 mi 1.5 m

Methane and oxygen react in the presence of a catalyst to form formaldehyde. In a parallel reaction methane is oxidized to carbon dioxide and water: CH 4 + 0 2 HCHO + H 2 O CH 4 + 2O 2 CO 2 + 2 H 2...

A thin electrical heater is wrapped around the outer surface of a long cylindrical tube whose inner surface is maintained at a temperature of 5C. The tube wall has inner and outer radii of 25 and 75...

A solid round bar, 25 mm in diameter, has a groove 2.5-mm deep with a 2.5-mm radius machined into it. The bar is made of AISI 1018 CD steel and is subjected to a purely reversing torque of 200 N m....

A supersonic aircraft consumes 5320 imperial gallons of kerosene per hour of flight and flies an average of 14 hours per day. It takes roughly seven tons of crude oil to produce one ton of kerosene....

Parallel flow of atmospheric air over a flat plate of length L = 3 m is disrupted by an array of stationary rods placed in the flow path over the plate. Laboratory measurements of the local...

Experimentally, it has been observed for single crystals of a number of metals that the critical resolved shear stress crss is a function of the dislocation density D as where 0 and A are...

The jib crane is supported by a pin at C and rod AB. The rod can withstand a maximum tension of 40 kN. If the load has a mass of 2 Mg, with its center of mass located at G, determine its maximum...

The temperature in a process unit is controlled by passing cooling water at a measured rate through a jacket that encloses the unit. The exact relationship between the unit temperature T(?C) and the...

Before being injected into a furnace, pulverized coal is preheated by passing it through a cylindrical tube whose surface is maintained at T sur = 1000C. The coal pellets are suspended in an airflow...

A torque T = 100 N · m is applied to the shaft EFG, which is running at constant speed and contains gear F. Gear F transmits torque to shaft ABCD through gear C, which drives the chain...

An air heater consists of a steel tube (k = 20 W/m K), with inner and outer radii of r( = 13 mm and r2 = 16 mm, respectively, and eight integrally machined longitudinal fins, each of thickness t = 3...

The horizontal x axis is drawn through the centroid C of the area shown and divides the area into two component areas A1 and A2. Determine the first moment of each component area with respect to the...

During a period of relative inactivity, the average rate of transport of enthalpy by the metabolic and digestive waste products leaving the body minus the rate of enthalpy transport by the raw...

The truss, used to support a balcony, is subjected to the loading shown. Approximate each joint as a pin and determine the force in each Member State whether the members are in tension or...

Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel. During the process, 30 kJ of heat is transferred to the water, and 5 kJ of heat is lost to the...

The shafts of an angle drive are acted upon by the two couples shown. Replace the two couples with a single equivalent couple, specifying its magnitude and the direction of its axis. SN- . 6N-m

Saturated steam at 125 kPa is compressed adiabatically in a centrifugal compressor to 700 kPa at the rate of 2.5 kg s-1. The compressor efficiency is 78%. What is the power requirement of the...

Air at 50% relative humidity is cooled isobarically at I atm absolute from 90C to 25C. (a) Estimate the dew point and degrees of superheat of the air at 90C. (b) How much water condenses (mol) per...

A thin, flat plate that is 0.2 m by 0.2 m on a side is oriented parallel to an atmospheric airstream having a velocity of 40 m/s. The air is at a temperature of T = 20C, while the plate is maintained...

Two-dimensional, steady-state conduction occurs in a hollow cylindrical solid of thermal conductivity k = 16 W/m K, outer radius ro = 1 m, and overall length 2zo = 5 m, where the origin of the...

The post is to be pulled out of the ground using two ropes A and B. Rope A is subjected to force F1 and is directed at angle θ1 from the horizontal. If the resultant force acting on the post is...

As more and more components are placed on a single integrated circuit (chip), the amount of heat that is dissipated continues to increase. However, this increase is limited by the maximum allowable...

Saturated steam at 300C is used to heat a counter currently flowing stream of methanol vapor from 65C to 260C in an adiabatic heat exchanger. The flow rate of the methanol is 5500 standard liters per...

A liquid mixture containing 25 mol% benzene and 75 mol% ethyl alcohol, in which components are miscible in all proportions, is heated at a constant pressure of 1 atm (101.3 kPa, 760 tort) from a...

A 50.0-mL portion of a solution containing 0.200 g of BaCl2 2H2O is mixed with 50.0 mL of a solution containing 0.300 g of NaIO3. Assume that the solubility of Ba(IO3)2 in water is negligibly small...

The air inside a chamber at T ,i = 50C is heated convectively with h; = 20 W/m 2 K by a 200-mm-thick wall having a thermal conductivity of 4 W/m K and a uniform heat generation of 1000 W/m 3 . To...

Beam AD carries the two 40-lb loads shown. The beam is held by a fixed support at D and by the cable BE which is attached to the counter-weight W. Determine the reaction at D when (a) W = 100 lb, (b)...

A gas-turbine power plant operates on the simple Brayton cycle between the pressure limits of 100 and 1200 kPa. The working fluid is air, which enters the compressor at 30°C at a rate of 150...

A schematic of a clutch-testing machine is shown. The steel shaft rotates at a constant speed . An axial load is applied to the shaft and is cycled from zero to P. The torque T induced by the clutch...

Cords AB and AC can each sustain a maximum tension T. If the drum has weight W, determine the smallest angle θ at which they can be attached to the drum. Given: T = 800 lb W = 900 lb A B W C T

Nitrogen is bubbled through a liquid mixture that initially contains Equimolar amounts of benzene and toluene. The system pressure is 3 atm and the temperature is 80C. The nitrogen flow rate is 10.0...

A storage tank for liquid n-octane has a diameter of 30 ft and a height of 20 ft. During a typical 24-h period the level of liquid octane falls from 18 ft to 8 ft. after which fresh octane is pumped...

Benzene vapor at 580C is cooled and converted to a liquid at 25C in a continuous condenser. The condensate is drained into 1.75-rn3 drums, each of which takes 2.0 minutes to fill. Calculate the rate...

Consider air at a pressure of 0.2 atm. Calculate the values of T and s. Express your answer in SI units.

The apparatus shown here is used to measure the vapor pressure of ethylene diamine. The system is loaded with pure ethylene diamine and the bath is adjusted to each of several known temperatures. The...

When air ( 21 mole% O 2 , 79 mole% N 2 ) is placed in contact with 1000 cm 3 of liquid water at body temperature, 36.9C, and 1 atm absolute, approximately 14.1 standard cubic centimeters [cm 3 (STP)j...

Standard addition graph. Tooth enamel consists mainly of the mineral calcium hydroxyapatite, Ca10(PO4)6(OH)2. Trace elements in teeth of archeological specimens provide anthropologists with clues...

Steam enters a nozzle at 400°C and 800 kPa with a velocity of 10 m/s, and leaves at 300°C and 200 kPa while losing heat at a rate of 25 kW. For an inlet area of 800 cm2, determine the...

A hot fluid passes through circular channels of a cast iron platen (A) of thickness LA = 30 mm which is in poor contact with the cover plates (B) of thickness L B = 7.5 mm. The channels are of...

The little-known rare earth element nauseum (atomic weight = 172) has the interesting property of being completely insoluble in everything but 12-year-old bourbon. This curious fact was discovered in...