[Luckyus]

Thermodynamics​

Question 3: How many laws of thermodynamics are there?​

I rather think that maybe you misclast the answer three is this correct or has the zeroth become a law or is it while an important but nonetheless still an idea? Can you elucidate please.

Thermodynamics has three main laws: the first law, the second law, and the third law. Then there was another law, called the "zeroth law." The law of conservation of mass is also an important idea in thermodynamics, but it is not called law.