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- 2.8 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.?1.528 KW-hr- K Cal-secs (Ans. 1313.781)When the coefficient of linear expansion, a, and the temperature change, T-T, are large, a length L, of a solid substance expands in length to a(T, -T₂) L₁ = L₁e O L=L[1 + a(Tƒ– T;)]. ○ Ly=al (Ty-T). O L=L[1 + In(a(T₁-T))]. a(T, I₂ = ₁₂₁[ 1 + ª²(²₁-7)].
- A process at constant volume pressure takes n mole vibrating diatomic from an initial temperature T to a final temperature 3T. Calculate the change in enthalpy, AH. Select one: O a. O b. ΔΗ AH = 9nRT AU = 5n RT O c. AH 11nRT ΔΗ O d. AH = 7nRT -A cylindricalinsulation fora steam pipe has an inside radius of 5 cm, an outer radius of 10 cm, and a thermal conducivity of 0.5 W/(m K). The outer surface of the insulation is exposed to ambient air with a heat transfer coefficient of 5 Wm2 K. What is the critical radius? O a. 200 mm O b. 100 mm OC. 50 mm O d. 10 mmThe solar panels are placed in an optimal position such that they receive a solar power of 1186kWh/m^2 per year1. The average solar cell has an efficiency of 20% and an average household in the Netherlands uses 2990kWh of electricity per year. The average solar panel has dimensions of 165x99cm. How many solar panels do you need?
- What is the standard unit of temperature in the SI? (Do not abbreviate; for example gram not g.)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.A sample of a serum of mass 26.5 g is cooled from 290 K to 275 K at constant pressure by the extraction of 1.41 kJ of energy as heat. Calculate q and AH and estimate the heat capacity of the sample. report here the heat capacity= J/k.g. 3 sig. number
- I want the calculation for this expiremnt Note: the unit of thermal conductivity w/m.kSolve with the correct units 3. Determine the temperature for which a thermometer with degrees Fahrenheit is numerically twice the reading of the temperature in degrees Celsius.Problem 3: Suppose a 500-mL beaker is filled to the brim with ethyl alcohol at a temperature of 5.00°C. You may assume the beaker is made of tempered glass, and has effectively zero thermal expansion. Randomized VariablesT = 22.5 °C Part (a) What volume, in milliliters, will overflow the beaker when its temperature reaches 22.5°C? The coefficient of volume expansion for ethyl alcohol is 1.100 × 10-3 /°C. Part (b) What volume of water, in milliliters, will overflow under the same conditions? The coefficient of volume expansion for water is 2.10 × 10-4 /°C.