Question detail

In Percentage yield, which option best answers variant 3 of this quantitative chemistry objective: (chemistry only) Use an appropriate number of significant figures in percentage-yield answers. (MS 2a)?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

Yield and atom economy of chemical reactions (chemistry only)

Question

A. formula and unit: (chemistry only) Use an appropriate number of significant figures in percentage-yield answers. (MS 2a)
B. wrong formula: uses a different Unit 4.3 relationship from Percentage yield
C. wrong unit: gives a value without checking the required unit
D. wrong reasoning: confuses coefficients, subscripts, mass, moles, or concentration

Answer

The correct option is formula and unit: (chemistry only) Use an appropriate number of significant figures in percentage-yield answers. (MS 2a).

Explanation

The correct option is formula and unit: (chemistry only) Use an appropriate number of significant figures in percentage-yield answers. (MS 2a). It is correct because it directly supports the approved learning objective to (chemistry only) Use an appropriate number of significant figures in percentage-yield answers. (MS 2a). This belongs to Percentage yield within Yield and atom economy of chemical reactions (chemistry only), so the answer must use the named Unit 4.3 relationship and avoid mixing it with nearby ideas such as mass, moles, concentration, yield, atom economy, gas volume, coefficients, or subscripts.

Common mistake

Significant Figures in Percentage Yield

Students often provide percentage yield answers with too many or too few significant figures, not aligning with the precision of the data used.

To fix this, students should determine the number of significant figures based on the least precise measurement used in their calculations and round their final answer accordingly.

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For Percentage yield, which option best supports this Unit 4.3 objective: (chemistry only) Use an appropriate number of significant figures in percentage-yield answers. (MS 2a)?