The relationship between heat transfer and change in temperature is given by Q = mcAt, where c is specific heat capacity. Under what conditions will c = %3D = Q? m = 1 kg AT = 1 °C %3D m = 1 g AT = 10 °C 10 g AT = 10 °C m = = 100 g AT = 10 °C %3D m = 1 g AT = 1 °C
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- The following are values of heat capacity for nitrogen gas; Temp K Cv J/mol. K 300 20.8 400 20.9 500 21.2 600 21.8 700 22.4 800 23.1 900 23.7 1000 24.3 1100 24.9 Using the general formula Cv = A BT C/T2, find values of A, B, and C that fit the given data.Calculate the specific heat of a material if 288J of energy were required to heat 50.5g of the material from 298K to 330K. What are the units?The Dieterici equation of state for one mole of gas is p=RTe-aVRTV-b Where a and b are constants determined experimentally. For NH3g, a = 10.91 atm. L2 and b = 0.0401 L. Plot the pressure of the gas as the volume of 1.00 mol of NH3g expands from 22.4 L to 50.0 L at 273 K, and numerically determine the work done by the gas by measuring the area under the curve.
- Many compressed gases come in large,heavy metal cylindersthat are so heavy that they need a special cart to move them around. An80.0-Ltank ofnitrogen gas pressurized to 172 atm is left in the sun and heats from its normal temperature of 20.0C to 140.0C. Determine a the final pressureinsidethe tank and b the work, heat, and U of the process. Assume that behavior is ideal and the heatcapacity of diatomic nitrogenis 21.0J/mol.K.What are the numerical values of the heat capacities c-v and c-p of a monatomic ideal gas,in units of cal/mol.K and L.atm/mol.K?Calculate DH and DStot when two copper blocks, each of mass 10.0 kg, one at 100°C and the other at 0°C, are placed in contact in an isolated container. The specific heat capacity of copper is 0.385 J K−1 g−1 and may be assumed constant over the temperature range involved.
- The value of the heat capacity at constant volume, CV,,m, for a gas sample was found to vary with temperature according to the expression CV,m (in J mol-1 K-1) = 11.86 + 0.3665 T. Calculate the change in the internal energy of 1.00 mol of the gas when the temperature is raised from 25oC to 200oC at constant volume,. [26.8 kJ]1.) 3 BTU OF HEAT ENERGY WAS REMOVED FROM A SYSTEM. THE SYSTEM WAS COMPRESSED AT A CONSTANT PRESSURE OF 1770.8 TORR FROM 1000mL TO 12.15gallons. (1liter = 0.264172gal.) a.) HOW MUCH WORK WAS PERFORMED? in BTU b.) CALCULATE THE CHANGE IN INTERNAL ENERGY OF THE SYSTEM. in BTU1. A chemical reaction takes place in a container fitted with a piston of cross-sectional area 75.0 cm2 . As a result of the reaction, the piston is pushed out through 25.0 cm against an external pressure of 150 kPa. Calculate the work done by the system.
- The heat capacity (Cp) 0f an hal0genated 0rganic c0p0und, chl0r0f0rm is given by the f0ll0w equati0n. Equati0n (1) Cp (J/mol K) = 19.8 +0.22 T – 0.00026 T2 (a) 0btain a new equati0n that uses T in Fahrenheit (b) Calculate the Cp 0f chl0r0f0rm at 300 K using Equation (1) (c) Calculate the Cp 0f chl0r0f0rm at 80 F using the equati0n you derived in (a)This pV diagram shows two different thermodynamic processes undergoneby 0.40 mol of a monatomic gas (where y equals 1.67). Process A is adiabatic, and process B is shown by a straight line (the process is unknown). What is the TF for both processes? For each one of the processes, what are the changes in thermal energy, the heat transferred, and the work done on the gas?1 kg of Air was heated at constant temperature from 0.03 m3 and 101 kPa to 0.01 m3. By how much did the internal energy change? Assume (cv = 0.7177 kJ/kg.K)