The Following Processes Occur Spontaneously at 25 ^$\circ$ CWhich of These Processes Is/are Endothermic?
1)NH₄NO₃ Dissolving in Water

The following processes occur spontaneously at 25 ^$\circ$ C.Which of these processes is/are endothermic?
1) NH₄NO₃ dissolving in water (which is accompanied by a cooling of the water) .
2) the expansion of a real gas into a vacuum (which is accompanied by a cooling of the gas) .
3) liquid water in an ice cube tray freezing into ice after being placed in a freezer.

A) 1 only
B) 2 only
C) 3 only
D) 1 and 2
E) 1,2,and 3