An object has a fixed volume and shape before it changes state. After the change, it still has a fixed volume but can now change in shape. Which
change of state has occurred?
A. Gas to liquid
B. Solid to liquid
O C. Liquid to gas
D. Gas to plasma

B. Solid to Liquid

A.P.E.X.

Explanation:

I'm no expert at this but if you think about it, a fixed shape is a solid figure such as an ice cube and when that melts, the solid (Ice Cube) turns into a liquid (Water). A liquid most of the time has a fixed volume but can still change shape such as going into a droplet of water or going into a spiral down the drain.

(Lemme know if this makes sense please)

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.