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===About Conservation of Mass===
: In [[Dissolve|dissolving]] '''conservation of mass''' means that the [[mass]] of the [[solvent]] and the [[mass]] of the [[solute]] can be added to find the [[mass]] of the [[solution]].
{| class="wikitable"
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|[[File:ConservationofMassDissolving.png|center|400px]]
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| style="height:20px; width:200px; text-align:center;" |Mass<sub>solvent</sub> + Mass<sub>solute</sub> = Mass<sub>solution</sub>
|}
: In a [[Chemical Reaction|chemical reaction]] '''conservation of mass''' means that the same [[atom]]s with made up the [[reactant]]s must make up the [[product]]s. So the [[atom]]s are not created or destroyed in a [[Chemical Reaction|chemical reaction]], they are just rearranged.