Which of the following statements are true? Select all that apply. Check All That Apply All isotopes of carbon (C) have the same number of protons. All isotopes of carbon (C) have the same number of protons. An atom with six protons in its nucleus will always have six neutrons in its nucleus. An atom with six protons in its nucleus will always have six neutrons in its nucleus. An atom with a neutral charge has an equal number of protons and electrons. An atom with a neutral charge has an equal number of protons and electrons. The mass number is the total number of electrons and protons in an atom. The mass number is the total number of electrons and protons in an atom.

An atom with a neutral charge has an equal number of protons and electrons.

Explanation:

The three main subatomic particles in the atom are neutrons, protons and electrons.

Protons are positively charged particles, electrons are negatively charged particles while neutrons are not charged particles.

An atom is neutral if the number of protons and electrons are equal. This is the condition for neutrality in the atom.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.