A Chemical Reaction That Is First Order in X Is $\times$

question 90

Multiple Choice

A chemical reaction that is first order in X is observed to have a rate constant of 1.7 $\times$ 10^-2s^-1.If the initial concentration of X is 1.0 M,what is the concentration of X after 190 s?

• A)25 M
• B)0.68 M
• C)0.24 M
• D)0.96 M
• E)0.040 M

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Definitions:

Budget Variance

The difference between budgeted figures for revenue or spending and the actual amounts incurred.

Machine-Hours

A measure of production time, calculated by the number of hours machines are operating as part of the manufacturing process.

Actual Output

The actual quantity of goods or services produced by a company within a specified timeframe.

Variable Overhead Rate

The ratio of variable overhead costs to an activity base such as units produced or direct labor-hours, used for costing purposes.