When liquid helium is exposed to room temperature, it forms a gas. which best explains why this happens?

the liquid helium absorbs energy from the air in the room.

the particles in the air absorb the energy of the liquid helium.

the helium particles release energy and slow down.

the air in the room has less energy than the liquid helium.

Who is better, messi or cristiano, i need this for a chemistry class. asap

What is the maximum amount of al2(so4)3 which could be formed from 15.84 g of al and 12.89 g of cuso4?

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.