Question

In an engine, an almost ideal gas is compressed adiabatically to half its volume. In doing so, 2820 J of work is done on the gas.

Required:
a. How much heat flows into or out of the gas?
b. What is the change in internal energy of the gas?
c. Does its temperature rise or fall?

Answer 1

1. 
   `Q=0`
2. 
   `U=2820`
3. Energy increases

Step-by-step explanation:

From the question we are told that

Work done
`W=2820`

a)Generally the heat flow for an adiabatic process is 0 (zero)

`Q= U + W =>0`

`Q=0`

b)Generally Change in internal energy of gas is mathematically given by

Since
`W=-2820J`

Therefore

`U=2820`

Giving

`Q= 2820 -2820`

`Q=O`

c)With increases in internal energy brings increase in temperature

Therefore

Energy increases