Silica (SiO₂)can Be Prepared from Silicon Ethoxide by the Sol-Gel

question 49

Multiple Choice

Silica (SiO₂) can be prepared from silicon ethoxide by the sol-gel process.Write a balanced equation for the hydrolysis of silicon ethoxide.

• A)SiCl₄ + 4 HOCH₂CH₃ + 4 NH₃ → Si(OCH₂CH₃)₄ + 4 NH₄Cl (in benzene)
• B)Si(OCH₂CH₃)₄ + 4 H₂O → Si(OH)₄ + 4 HOCH₂CH₃
• C)Si(OCH₂CH₃)₄ + 4 HOCH₃ → Si(OCH₃)₄ + 4 HOCH₂CH₃
• D)Si(OCH₃)₄ + 4 H₂O → Si(OH)₄ + 4 HOCH₃

Interpret common-size financial statements and their implications for a firm's financial health.

Assess the importance of industry standards and comparisons in financial analysis.

Understand the role of cash flow analysis in evaluating a firm's financial sustainability.

Evaluate how operational changes affect financial ratios and overall company performance.

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Definitions:

Opportunity Cost Curve

A graphical representation that shows the trade-offs between two options, highlighting what is sacrificed when choosing one option over another.

Excess Capacity

A situation where a firm operates below its maximum production capacity, indicating it can increase output without incurring higher fixed costs.

Variable Costs

Expenses that change in proportion to the level of goods or services produced, such as materials and labor costs.

Repeat Customers

Customers who return to a business to make subsequent purchases, showing loyalty and continued interest in a company's products or services.