If 3500 G of Ni Are Reacted with Excess Oxygen to to Form

question 75

Multiple Choice

If 3.500 g of Ni are reacted with excess oxygen to form nickel oxide (NiO) under standard state conditions, what is the entropy change for the reaction?
2Ni(s) + O₂ $\leftrightarrow$ 2NiO(s) $\begin{array}{lr}\text { Substance } & S^{\circ}(\mathbf{J} / \mathbf{m o l} \cdot \mathbf{K}) \\\mathrm{Ni} & 182.1 \\\mathrm{O}_{2} & 205.0 \\\mathrm{NiO} &37.99\end{array}$

• A) -49.3 J/K
• B) -24.7 J/K
• C) -14.7 J/K
• D) +49.3 J/K
• E) -10.4 J/K

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Definitions:

Null Hypothesis

A statement in statistical hypothesis testing that assumes there is no significant difference or association between specified populations, any observed difference being due to sampling or experimental error.

Worldview I

The fundamental cognitive orientation of an individual or society encompassing the entirety of the individual or society's knowledge and point of view.

Objectively Measurable

Qualities or phenomena that can be quantified or evaluated by objective criteria rather than by personal feelings or opinions.

Rationalism

A philosophical stance asserting that reason is the chief source and test of knowledge, as opposed to empirical evidence.