Calculate the changes in internal energy and enthalpy when air changes from an initial state is 40°F and 10 atm, where its molar volume is 36.49 (ft)3(lb mol)-1, to a final state of 140°F and 1 atm. Assume for air that PV / T is constant and that Cv=5 y Cp=7 (Btu) (lb mol)-1 (F°)-1

The reaction rate for the prepupal development of male Drosophila is temperature-dependent. Assuming that the reaction rate is exponential as in R x e-bdlCB!) , the activation energy for this development is 3.01 x 10-19 J. A Drosophila is originally at 20.10°C, and its temperature is increasing. If the rate of development has increased 3.50%, how much has its temperature increased? The value of the Boltzmann constant is 1.381 x 10-23 J/K (see Table B.1). °C

An ideal gas consists of 2.50 mol of diatomic molecules that rotate but do not oscillate. The molecular diameter is 118 pm. The gas is expanded at a constant pressure of 1.79 x 105 Pa, with a transfer of 150 J as heat. What is the change in the mean free path of the molecules?

You have just prepared a new substance in the lab and you wish to characterize its thermo- dynamic properties. As a start, you measure the vapor pressure of its solid and liquid phases at several temperatures between 200 and 400 K and you determine that the vapor pressures are accurately modeled by In In p(s) 1 bar P(¹) 1 bar = 18.000 = 11.500 3600 K T 2500 K T where T is in K. Calculate (a) the temperature (in K) and (b) the pressure (in bars) at the triple point.

The PV diagram shows the compression of 40.9 moles of an ideal monoatomic gas from state A to state B. Calculate Q, the heat added to the gas in the process A to B. Data: PA= 1.90E+5 N/m2 VA= 1.83E+0 m3 PB= 1.01E+5 N/m2 VB= 8.90E-1 m3›44

Two evacuated bulbs are connected by a tube of negligible volume. The volume of one of the bulbs is twice that of the other. The larger volume bulb is placed in a 200K Isother constant-temperature bath and the other in a 300K bath, and then 1.00mol of an ideal me gas is injected into the system. Find the final number of moles of gas in each bulb.

On a hot summer day, the density of air at atmospheric pressure at 34.5°C is 1.1866 kg/m³. (a) What is the number of moles contained in 1.00 m³ of an ideal gas at this temperature and pressure? mol (b) Avogadro's number of air molecules has a mass of 2.82 x 10-2 kg. What is the mass of 1.00 m³ of air? (Assume air is an ideal gas.) kg (c) Does the value calculated in part (b) agree with the stated density of air at this temperature? (Consider that it does if the values are within 10% of each other.) O Yes O No

A good explanation would be really helpful

At what temperature (in Kelvin) will the diffusion coefficient for the diffusion of species A in metal B have a value of 5.92 × 10-16 m2/s, assuming values of 2.8 x 10-6 m?/s and 225,000 J/mol for Do and Qd, respectively? i K

1.7 Ideal gas response functions Find the thermal expansion coefficient and the isothermal compressibility for an ideal gas and show that in this case Cp - Cy = - a² can be reduced to Cp – Cy = Nkg for the molar specific heats. TV Кт