How Many Atoms of He Gas Are Present in a 450

question 6

Multiple Choice

How many atoms of He gas are present in a 450 mL container at 35°C and 740 mmHg?

• A)0.017 He atoms
• B)0.068 He atoms
• C)1.2 x 10⁵ He atoms
• D)1.0 x 10²² He atoms
• E)7.9 x 10²⁴ He atoms

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Definitions:

Range

The difference between the highest and lowest values in a data set, indicating its spread.

Coefficient of Variation

A metric that quantifies the spread of data points around the mean within a dataset, represented as a percentage of the mean itself.

Variance

A statistical measure of the dispersion of a set of data points in a data distribution, showing how each data point differs from the mean.

Variance

A measurement of the spread between numbers in a data set, indicating how much the numbers differ from the mean.