A piston has an external pressure of 14. 0 atm. How much work has been done in joules if the cylinder goes from a volume of 0. 180 liters to 0. 460 liters?.

What is the efficiency of an engine that does 80 j of work and exhausts 320 j of heat while taking in 400 j of heat ? a. 10% b. 20% c. 80% d. 25%

Aphase diagram assumes is kept constant.

Atoms seldom exist as independent particles in nature a) as single particles, most atoms have low potential energy b) their electronegativity is much lower when they combine with other atoms c) atoms are more stable when they combine with other atoms d) neutral particles are rare