An Unknown Hydrate of Sodium Dichromate,Na₂Cr₂O₇ • XH₂O,is Heated to Give

question 142

Multiple Choice

An unknown hydrate of sodium dichromate,Na₂Cr₂O₇ • XH₂O,is heated to give 12.1% water.What is the water of crystallization (X) for the hydrate?

• A)1
• B)2
• C)3
• D)4
• E)12

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Definitions:

Income Statement

A financial statement that reports a company’s financial performance over a specific accounting period.

Manufacturing Margin

The difference between the cost of goods produced and the sales revenue from those goods, indicating the profitability of manufacturing activities.

Contribution Margin

The difference between sales revenue and variable costs, used to cover fixed costs and contribute to profits.

Gross Margin

The financial metric representing the difference between revenue and the cost of goods sold, divided by revenue, often expressed as a percentage. It indicates how efficiently a company is using its resources to produce goods.