Will a Precipitate Form (Yes or No) When 50

question 20

Multiple Choice

Will a precipitate form (yes or no) when 50.0 mL of 1.2 * 10^-3 M Pb(NO₃) ₂ are added to 50.0 mL of 2.0 * 10^-4 M Na₂S If so, identify the precipitate.

• A) Yes, the precipitate is PbS
• B) Yes, the precipitate is NaNO₃
• C) Yes, the precipitate is Na₂S
• D) Yes, the precipitate is Pb(NO₃)₂
• E) No, a precipitate will not form

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Definitions:

Complex

Comprising many interconnected parts or elements; not simple or straightforward, often requiring significant time or effort to understand or deal with.

Direct Observation

A research method where data is collected by watching subjects in their natural or controlled environment without interference or manipulation.

Indirect Observation

Research or data collection method where behavior is observed and recorded without direct interaction with the subjects being studied.

Objective Performance

A method of assessment based on measurable, observable facts and outcomes, thereby reducing personal biases in evaluation.