A researcher places dogs in a cage with metal bars on the floor. The dogs are randomly given electric shocks and can do nothing to prevent them or stop them. Later, the same dogs are placed in a cage where they can escape the shocks by jumping over a low hurdle. When the shocks are given, the dogs do not even try to escape. They just sit and cower. This is an example of .

What is a limitation of using a chemical formula, such as c6h1206, to represent a compound? the chemical formula does not show the types of elements that make up the compound. the chemical formula does not show how the atoms are connected to one another the chemical formula does not show the number of atoms of each element in a molecule. the chemical formula does not show the chemical symbols of the elements in the compound