Question

mixture do not have a fixed melting or boiling point unlike element or compound why​

Answer 1

Mixture contain different types of substances in different compositions. these substance may have different melting andboiling point hence the melting and boiling point of a mixture cannot be fixed. proof: If you heat salt water, the boiling point will exceed 100 Celcius.

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Answer 2

Answer:

Earliest Traditions. ...

Mechanical Counting Devices - Abacus, Napier's Bones, Slide Rule. ...

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Logic Machines.