A Student Is Given a Sample in Lab That Contains

question 135

Multiple Choice

A student is given a sample in lab that contains one of the ions listed below.After adding a few drops of AgNO₃ solution to a portion of the unknown sample,the student observed a grayish precipitate.After adding a few drops of Mg(NO₃) ₂ solution to another portion of the unknown sample,the student got a black precipitate.Based on these observations,what is the only possible ion in this student's sample?

• A)Cl^-
• B)F^-
• C)C₂H₃O₂^-
• D)S^2-
• E)SO₄^2-

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Definitions:

Two-way ANOVA

An approach in statistical analysis used to determine the impact of two nominal variables on a continuous variable they predict.

Interaction Effect

In statistical analysis, it refers to a situation where the effect of one independent variable on a dependent variable depends on the level of another independent variable.

Two-way ANOVA

A technique used in statistics to assess the influence of two discrete independent variables on a continuous dependent variable.

Hypotheses

Propositions made as a basis for reasoning, without any assumption of their truth.