Iwill give what is the name of the group of elements that are human-made and do not occur in nature? (5 points) select one: a. actinides b. halogens c. noble gases d. nonmetals

Actinides

Explanation:

give that other person a pls! you cant give the crown if there is only one answer

away from the curb

explanation:

the wheels would then hit the curb if it started to rolling, decreasing the chance of an accident.

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.