A real gas is changed slowly from state 1 to state 2. During this process no work is done on or by the gas . This process must be :

Isovolumic

Explanation:

In thermodynamics, the process whereby A real gas is changed slowly from state 1 to state 2 and in this process there's no work done on or by the gas is called Isovolumic process.

i think the answer is b

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2