Answer to Question #273015 in General Chemistry for lei

Question

Two moles of gas A at 35 degF and 35 grams of gas B at 35 degC were combined and their temperature become 20 degC. Gases A & B have specific heats of 5/3 R and 7/2 R, respectively. Use R = 8.3145 J/mol-K, 1 BTU = 1055 J

What is the initial temp of Gas A in degC?

What is the change of temperature of Gas B in K?

Change of temperature of Gas B in degF?

Molecular weight of Gas B?

How much is the heat involved in the process in BTU?

Answer 1

the change in enthalpy arose as a unit of measurement meant to calculate the change in energy of a system when it became too difficult to find the ΔU, or change in the internal energy of a system, by simultaneously measure the amount of heat and work exchanged. Given a constant pressure

35×5/3= 58.33°C