The nucleus of the atom contains what subatomic particle(s)? (4 points) Select one: a. Protons only b. Neutrons only c. Electrons only Incorrect d. Protons and neutrons e. Protons and electrons

D.) Protons and Neutrons

Explanation:

The nucleus of the atom contains protons and neutrons, whilst electrons move around the nucleus

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.

it is b that is the answer.