Chemical Reactions & Energy Changes

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[@pramilab6839]

What is the black substance in exothermic reaction example?

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[@rajeshvankar4183]

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[@shubhamgamer1k335]

How endo and exo. Reactions satisfy law of conservation of energy

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[@nachoswithnyesha201]

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[@rajashreevanur1858]

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[@anandivlogging4538]

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[@sadhnasadhnasinghgh2392]

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[@putulghosh7259]

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[@manpreet7669]

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[@shruthikakannan3974]

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