Which of these discoveries contradict components of dalton’s atomic theory? check all of the boxes that apply.

atoms contain smaller particles: protons, neutrons, and electrons.

atoms of a given element can bond to other atoms only in specific ways.

atoms of a given element can have different numbers of neutrons.

nuclear reactions can change an atom of one element into an atom of another element.

all atoms of a given element have the same number of protons.

Atoms contain smaller particles: protons, neutrons, and electrons.

Atoms of a given element can have different numbers of neutrons.

Nuclear reactions can change an atom of one element into an atom of another element.

All atoms of a given element have the same number of protons.

Explanation:

Electrons, protons, and neutrons, and isotopes had not yet been discovered.

The only statement that agrees with Dalton's atomic theory is  

B. Atoms of a given element can bond to other atoms only in specific ways. Dalton used this postulate to formulate the Laws of Definite Composition and of Multiple Proportions.

the answer is the first option

explanation:

just googled it m8. not that hard

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the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.