3. If the half-life model decayed perfectly, how many atoms would be remaining (not decayed) after 12 seconds?
(started with 200 atoms before decay). pls help :)

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.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

answer: mole of the gas

answer: mole of the gasexplanation: