For this activity, you will create a visual representation of a chemical reaction. Your visual representation should be colorful. The ions should also be separate, just as they would exist in an aqueous solution. Make sure you include the
symbols and charges on the ions.
Ca(NO3)2(aq) + Na2SO4(aq) - NaNO3(aq) + CaSO4(s)

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.

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c. orbital shape i hope this is correct