Question

can someone help me with number 17.35 and 17.49? thank you

Toe Boyle's law to determine the final - 33 A 220-L cylinder contains 150 atm. If the gas is allowed to opposing pressure of 1.0 atm, how The expansion will stop when the in palision will stop Il equals the external pressure. determine the final volume. nder contains an ideal gas at a pressure of 1f the gas is allowed to expand against a constant pressure of 1.0 atm, how much work is done? sion will stop when the internal pressure equals he external pressure. Use Boyle's law to determine the final volume. 17.34 A balloon contain balloon contains 2.0 L helium at 1.10 atm. Calculate the work done if the gas expands against a constant atmos- pheric pressure of 754 torr. The expansion will stop when the internal pressure equals the external pressure. Use Boyle's law to determine the final volume. DJECTIVE Relate heat, work, energy, and the first law ов enth 17. of thermodynamics. 17. 17. 17.35 For a process, w = -987 J and q = 555 J. What is AE for this process? 17.36 For a process, w = 34 J and q = -109 J. What is AE for this process? 17.37 Calculate w for a process in which q = 98 J and AE = -100 J. 17.38 – Calculate g for a process in which w = 0 J and AE = 150 J. 17.39 A reaction between a solid and a liquid produces 4.5 L of a gas at 0.94 atm and absorbs 4.35 kJ of heat. Determine 9, w, and AE for the reaction. (Assume an initial volume of 0.) 17.40 A reaction at 1.02 atm consumes 3.5 L of a gas and gives off 2.71 kJ of heat. Determine , w, and AE for the reaction. 17.41 A When an ideal gas expands at constant temperature (a condition referred to as isothermal), AE is zero because the internal energy of an ideal gas depends only on tem- initially at

Answer 1

17.35)

Using first law of thermodynamics

∆E = q + w

= 555 - 987 => - 432 J

17.49) a) positive

b) positive

c) negative

D) negative