When 300 J of heat are applied to a 8.82 gram sample of an unknown metal, the temperature rises from 21°C to 86°C. What is the identity of the metal?

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It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

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