Fluctuations in Flame Temperature Affect the Reproducibility of Atomic Emission

question 7

Multiple Choice

Fluctuations in flame temperature affect the reproducibility of atomic emission experiments more so than atomic absorbance experiments.Which of the following statements explain this phenomenon?
I As temperature increases there is an increase in emission intensity resulting from an increase in the excited state population;the apparent concentration is greater than the actual concentration.
II As temperature decreases there is a decrease in emission intensity resulting from an increase in the excited state population;the apparent concentration is greater than the actual concentration.
III As temperature increases there is a decrease in emission intensity resulting from a decrease in the excited state population;the apparent concentration is less than the actual concentration.
IV As temperature decreases there is a decrease in emission intensity resulting from a decrease in the excited state population;the apparent concentration is less than the actual concentration.

• A)II and III
• B)I and IV
• C)I and III
• D)II and IV
• E)None of these statements explains this phenomenon.

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Definitions:

Variable Cost

Charges that adjust in alignment with the volume of production or output levels.

Total Cost

The sum of fixed and variable costs incurred in the production of goods or services.

Fixed Costs

Costs that do not change with the level of output or production, such as rent, salaries, and loan payments.

Output Level

The total amount of goods or services produced by a business, sector, or economy within a specific timeframe.