A 25.0-g sample of a bright blue, crystalline solid is heated in the presence of air. The solid remaining after heating has a mass of 15.9-g. Therefore, the reaction that took place must be a: decomposition reaction synthesis reaction combustion reaction single replacement reaction double replacement reaction
A decomposition reaction can be described as a reaction in which the compound breaks down into two or more simpler substances. These reaction involves the input of energy in the form of heat, electricity, light etc.
A synthesis reaction can be described as a type of reaction involves the combination of multiple reactants to form a single product.
A combustion reaction can be described as a reaction in which the substance reacts with the oxygen gas which releases carbon dioxide and water.
A single replacement reaction or single displacement reaction can be described as a reaction where one element is replaced by the another element in a compound.
A double replacement reaction or double displacement reaction can be described as a reaction where two the reactants exchange their ions to give two new compounds.
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