The Initial Concentration of Reactant in a First-Order Reaction Is

question 66

Multiple Choice

The initial concentration of reactant in a first-order reaction is 0.27 M. The rate constant for the reaction is 0.75 s^-1. What is the concentration (mol/L) of reactant after 0.50 s?

• A)0.64
• B)1.7
• C)0.19
• D)0.11
• E)0.39

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Definitions:

Yards

A measurement unit equal to three feet or 0.9144 meters, often used in expressing lengths or distances.

Factory Overhead Cost Budget

A budget that estimates the cost for each item of factory overhead needed to support budgeted production.

Total Variable Cost

The sum of all costs that vary directly with the level of production, including materials and direct labor.

Fixed Costs

Expenses that do not change with the level of production or sales, such as rent or salaries.