Question

Which of the following is a statement of the first law of thermodynamics?

Answer 1

A) Energy cannot be created or destroyed

Answer 2

For this case what you should know is the statement of the first law of thermodynamics.

By definition, we have to:

• This law establishes that energy is not created, nor destroyed, but is conserved.
• Then we have that when a certain system is subjected to a thermodynamic cycle, the heat given by the system will be equal to the work received by it, and vice versa.

In equation mode we have to:

$Q-W = 0$

Where,

1. Q: heat
2. W: work done

Answer:

A) Energy can not be created or destroyed.