A Sample Contains 52

question 21

Multiple Choice

A sample contains 52.0 g of elemental phosphorus, P₄. Determine the number of moles of P₄ and the number of atoms of phosphorus present in the sample.

• A) 0.419 moles, 2.52 × 10²³ atoms
• B) 1.68 moles, 1.01 × 10²⁴ atoms
• C) 0.419 moles, 1.01 × 10²⁴ atoms
• D) 1.68 moles, 4.04 × 10²⁴ atoms
• E) 0.419 moles, 2.79 × 10^-24 atoms

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Definitions:

Inelastic

A description of a product or service's demand when consumers' demand is relatively insensitive to price changes.

Price Elasticity of Demand Coefficient

A metric that determines how the demand for a product reacts to adjustments in its price.

Midpoint Formula

A mathematical method used to calculate the average or midpoint of two points on a line, often used in economics to find the elasticity of demand.