Which of the following reaction involve chemical reactions? answer choices Storing of oxygen gas under pressure in a gas cylinder. Liquefaction of air Keeping petrol in a china dish in open Heating of copper wire

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The heating of copper wire involves chemical reactions. Copper, when heated, reacts to oxygen in the air. This reaction creates black copper oxide. [ ]

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which of the following gases can be used for storage of fresh sample of an oil for a long time? answer choices Carbon dioxide and oxygen Nitrogen and oxygen Carbon dioxide and Helium Helium and Nitrogen.

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which of the following is exothermic reaction? answer choices Evaporation of water Dilution of acid Sublimation of camphore Decomposition of chlorine

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sana08

Dilution of acid is exothermic reaction.

Added 7/29/2022 2:58:48 PM

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which of the following is exothermic reaction? answer choices Evaporation of water Dilution of acid Sublimation of camphore Decomposition of chlorine

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Weegy: The following gases can be used for storage of fresh sample of an oil for a long time: Helium and Nitrogen. (More)

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which of the following is exothermic reaction? answer choices Evaporation of water Dilution of acid Sublimation of camphore Decomposition of chlorine

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