Estimate the Minimum Temperature at Which Magnetite Can Be Reduced $\rightarrow$

question 9

Multiple Choice

Estimate the minimum temperature at which magnetite can be reduced to iron by graphite.
Fe₃O₄(s) + 2C(s) $\rightarrow$ 2CO₂(g) + 3Fe(s)
$\Delta$ S_r ^$\circ$ = +351.44 J.K^-1.mol^-1
The standard molar enthalpies of formation of magnetite and CO₂(g) are -1118.4 and -393.51 kJ.mol^-1,respectively.

• A)670 \(\circ\) C
• B)Magnetite cannot be reduced by carbon at any temperature.
• C)787 \(\circ\) C
• D)943 \(\circ\) C
• E)1790 \(\circ\) C

Comprehend the regulatory framework governing securities and the role of securities commissions.

Grasp the concept of fiduciary duties owed by directors, officers, and agents to the corporation and its shareholders.

Recognize the legal mechanisms available to shareholders for addressing breaches of duty and protecting their interests within a corporation.

Understand the concept of a closely held corporation and the specific legal considerations and protections applicable to it.

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Definitions:

Best Fit

A line or curve that approximates the relationship between two variables in a set of data, minimizing the discrepancies between observed and predicted values.

Data Points

Individual values or measurements that are collected as part of a data set.

Curvilinear

Describes a relationship between two variables that is graphed as a curved line.

Compounded Interest

This refers to the calculation of interest on the original principal amount as well as on the interest that has accrued in earlier times, applicable to both deposits and loans.