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- The pressure, P of an ideal gas, can be expressed as P = nRT/V where n is the number of moles, T is the temperature, V is the volume and R = 8.314JK^-1 mol^-1 is the ideal gas constant. a) Find the expression for deltaP in terms of deltan, deltaT and deltaV: deltaP = deltan + deltaT + deltaV b) Suppose that n = 1, V = 1m^3 and T = 300K initially. If n and V change to 9/5 and 7/10m^3 respectively, estimate the change in T(K) required to keep P constant.The minimum number of lighting fixtures in an Auditorium library was calculated to be 250 luminaires (in accordance with the BZ method). The lighting fixtures used are 1x22-Watt LED (The lumens output of each LED lamp is 3000 lumens). The Utilization factor was found to be 0.55. What is the area of the Auditorium library? Assume a reduction factor of 1 and a depreciation factor of 1.5. Select one: 1100 m² O O 275 m² 40900 m² 550 m²2.8 At a temperature of 100°C and an absolute pressure of 5 at- mospheres, what is the ratio of the density of water to the den- sity of air, p,/P.?
- Show that (ƏT· V др Cp (%) -1 HStarting from the internal energy equation, using the relations for enthalpy h = e + p/p and hT = h + u?/2 for the total enthalpy, get the following energy equation. DhT др + div(kVT) + at a (Tij'u;) + pfiu; DtThe mean flee path for helium at a certain temperature and pressure is 2.10107 m. The radius of a helium atom can be taken as 1.101011 m. What is the measure of the density of helium under those conditions (a) in molecules per cubic meter and (b) in moles per cubic meter? `
- Physics Comet C/1995 O1 (Hale-Bopp) has a gas production rate for H2O of Q = 8.35 x 1030 molecules per second at 1.5 AU. Estimate the radius of its nucleus in km. (Use 3 sig. figs.)How many atoms are in a 1.60 cm x 1.60 cm x 1.60 cm cube of aluminum? Submit ΑΣΦ Request Answer ? atomsQ1/ If H = U + PV, find the relations between G and FH.
- 1Pa = 1N/m true or false?Compute the density in units of of an ideal gas under the following conditions: a) At and Torr pressure (1 Torr = 1mm Hg) this is called loschmidt number. b) In a vacuum of Torr at room temperature . This number is useful one for the experimentalist to know by heart. (10^-3 Torr = 1 micron)The specific reaction rate constant k is a strong function of temperature according to the following equation: 1 In the equation above, the reaction rate constant k is expressed in R is the universal gas constant 8.314- What is the unit of A? O mol m OK Om O J O mol K J mol 01 S Pa.m ³ m k=Axexp- Pa.m³ constant (1.314 P-²). mol. K E RT and T is the absolute temperature in K. The equation is dimensionally homogenous.