A 1000 ML Sample of 0

question 124

Multiple Choice

A 100.0 mL sample of 0.10 M NH₃ is titrated with 0.10 M HNO₃.Determine the pH of the solution after the addition of 50.0 mL of HNO₃.The K_b of NH₃ is 1.8 × 10^-5.

• A) 4.74
• B) 7.78
• C) 7.05
• D) 9.26
• E) 10.34

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Definitions:

Break-Even Point

The point where the amount produced or sold matches the overall expenses, leading to neither a profit nor a loss.

Contribution Margin

A profitability metric that calculates the amount of revenue remaining after deducting variable costs, used to cover fixed costs and generate profit.

Selling Price

The amount of money for which a product or service is offered for sale to customers.

Contribution Margin Ratio

The percentage of revenue remaining after variable costs have been subtracted, indicating how much revenue is available to cover fixed costs and generate profit.