Gr
12. I want to group items together that are a like in some way.
This is called
12

the link still does not work even when adding it to the url bar

explanation:

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.

um i think it might be a car?

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock