A Chemist Places AgNO₃ in One Flask and NaBr in Another

question 23

Multiple Choice

A chemist places AgNO₃ in one flask and NaBr in another. Water is added to both flasks and the mixture in the first flask is added to the second. Which choice below describes correctly the results of this experiment?

• A) Both of the compounds in the flasks dissolve when water is added and AgBr precipitates when the contents of the flasks are mixed.
• B) Both of the compounds in the flasks dissolve when water is added and NaNO₃ precipitates when the contents of the flasks are mixed.
• C) Both of the compounds in the flasks dissolve when water is added and there is no precipitate when the contents of the flasks are mixed.
• D) The AgNO₃ does not dissolve in water, but the NaBr does dissolve. There is no change upon mixing the contents of the flasks.
• E) none of these

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Definitions:

Negative Reinforcement

Removing an unpleasant or negatively valued stimulus from a situation, thereby strengthening the behavior that precedes this removal.

Intermittent Reinforcement

A conditioning schedule in which a reward is not given every time the desired response is performed, enhancing the response's resistance to extinction.

Peer Pressure

Influence exerted by a peer group, encouraging individuals to change their attitudes, values, or behaviors to conform to group norms.

Anti-Smoking Messages

Communications aimed at promoting the cessation of tobacco use, often highlighting the health risks of smoking and second-hand smoke exposure.