Two samples of gold that have different temperatures are placed in contact with one another. heat will flow spontaneously from a sample of gold at 60°c to a sample of gold that has a temperature of
(1) 50°c (3) 70°c
(2) 60°c (4) 80°c

Explanation:

The second law f thermodynamics tells us that naturally, heat will flow from a hotter object to a colder object until the bodies are at the same temperature. So heat will spontaneously flow from gold at 60 degrees Celsius to a body that is colder than it which on the list of possible answers.

electron microscopy and scanning tunneling microscopes gives us a greater understanding of atoms by being able to see the atom itself, and lets us see some atomic reactions.

explanation:

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