A Sample of He Gas (2

question 67

Multiple Choice

A sample of He gas (2.0 mmol) effused through a pinhole in 53 s. The same amount of an unknown gas, under the same conditions, effused through the pinhole in 248 s. The molecular mass of the unknown gas is _ g/mol.

• A) 19
• B) 5.5
• C) 350
• D) 88
• E) 0.19

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Definitions:

Equilibrium Price

The price at which the quantity of a good or service demanded equals the quantity supplied.

Producer Surplus

The difference in earnings expected by producers for a good or service versus the actual payment received.

Equilibrium Price

The price at which the quantity of a good or service demanded by consumers is equal to the quantity supplied by producers, resulting in a balance without excess supply or demand.

Producer Surplus

The variance between the price producers want to sell an item for and the price they end up receiving.