A Sample Containing Fe₂O₃ Is Dissolved and the Fe³⁺ Is

question 44

Multiple Choice

A sample containing Fe₂O₃ is dissolved and the Fe³⁺ is reduced to Fe²⁺, which is titrated with standard 0.0200 M KMnO₄. The skeleton equation is:
Fe²⁺ + MnO₄ ^- →Fe³⁺ + Mn²⁺ How many grams of iron (molar mass = 55.85 g/mol) are in the sample, if 25.0 mL of KMnO₄ are required in the titration?

• A) 0.140 g
• B) 0.0279 g
• C) 5.58×10 ^{- 3} g
• D) 140 g
• E) need more information

Understand the basic components and calculations involved in a balance sheet.

Comprehend purchasing, pricing, compensation, and policies relevant to business operations.

Understand the concepts and calculations related to the cash conversion cycle (CCC), Days of Inventory (DOI), Days Sales Outstanding (DSO), and Days Payable Outstanding (DPO).

Distinguish between different types of business financial statements and their purposes.

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Definitions:

Net Income

Profit calculated as total revenues minus total expenses, interest, and taxes, representing how much the company earned or lost.

Initial Value Method

An accounting method where investments are recorded at their purchase cost without reflecting market value changes over time.

Retained Earnings

The portion of net income that is not distributed to shareholders but instead reinvested in the core business or used to pay off debt.

Common Stock

Equity ownership in a corporation, with voting rights and potential dividends.