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A 1.5-m3 insulated rigid tank contains 2.7 kg of carbon dioxide at 100 kPa. Now paddle-wheel work is done on the system until the pressure in the tank
A 0.016773-m3 tank contains 1 kg of refrigerant-134a at 110°C. Determine the pressure of the refrigerant, using
Octane (C8H18) oxidizes at high temperatures in the presence of oxygen to form CO2and H2O. How many moles of CO2 are produced per mole of octane?
Fixed water monitors are present throughout the refinery to extinguish refinery equipment fires. The refinery ERT does not fight fires past the incipient stage.
Benzene, a known carcinogen, has been spilled on the laboratory floor and has spread to a length of 2 m.
A plastic coating is applied to wood panels by first depositing molten polymer on a panel and then cooling the surface of the polymer by subjecting
A platinum catalytic reactor in an automobile is used to convert carbon monoxide to carbon dioxide in an oxidation reaction of the form 2CO + O2 = 2CO2.
A 50-mm-diameter, thin-walled metal pipe covered with a 25-mm-thick layer of insulation (0.085 W/m · K) and carrying superheated steam at atmospheric pressure
A 3-m-long steel rod (k = 43 W/(mK), a = 1.17 10-5 m2/s) is initially at 20°C and insulated completely except for its end faces
Consider carbon dioxide at 10 atm and 400°C. Calculate ? and cp at this state and then estimate the new pressure when the gas is cooled isentropically to 100°C
An ideal gas flows adiabatically through a duct. At section 1, p1 = 140 kPa, T1 = 260°C, and V1 = 75 m/s. Farther downstream, p2 = 30 kPa and T2 = 207°C.
Cola, approximated as pure water at 20°C, is to fill an 8-oz container (1 U.S. gal =128 fl oz) through a 5-mm-diameter tube.
What is the chemical symbol of arsenic, and what group/family does it belong to?
Why does pore coalescence in a glassy material cause an increase in porosity and negative densification?
What is your personal reaction about the two sources?
A somewhat inaccurate, but geometrically convenient way of visualizing carbon bonding is to consider the carbon nucleus at the center of a tetrahedron
A recent article [James, K. and J. Kohn, New biomaterials for tissue engineering, MRS Bull., 21(11), 22-26 (1996)] describes the use of tyrosine-derived
For both FCC and BCC crystal structures, the Burger's vector b may be expressed as
Bragg's Law is a necessary but not sufficient condition for diffraction by real crystals. It specifies when diffraction will occur for unit cells having atoms
Indicate which of the following pairs of metals would not be likely to form a continuous series of solid solutions: Ta-W; Pt-Pb, Co-Ni, Co-Zn, and Ti-Ta.
An article related to acrylic bone cements [Abboud, M. et al., PMMA-based composite materials with reactive ceramic fillers: IV. Radiopacifying particles
Describe the fundamental differences and similarities between temperature and heat.
Discuss how vapor density and vapor pressure contribute to the hazards of a spilled or released hazardous material.
Solve for the molecular orbitals and normalization coefficients. Determine the resonance energy.
Briefly explain what would happen if you altered the shape of an enzyme's active site. Remember that an enzyme is a protein.