A Quantity of 7

question 164

Multiple Choice

A quantity of 7.85 g of a compound having the empirical formula C₅H₄ is dissolved in 301 g of benzene. The freezing point is 1.05 ° C below that of pure benzene (k_f = 5.12 ° C/m) . The molar mass of the species in solution in benzene is:

• A) 64.0 g/mol
• B) 38.3 g/mol
• C) 11.5 g/mol
• D) 127 g/mol
• E) 194 g/mol

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Definitions:

Supply Equation

A mathematical representation that describes the relationship between the price of a good and the quantity of the good that suppliers are willing to sell.

Price Floor

A regulatory measure that sets the lowest legal price for a good or service to prevent market prices from dropping below a specified level, ensuring producers' welfare.

Shortage/Surplus

A shortage occurs when demand exceeds supply, while a surplus happens when supply exceeds demand, both of which can lead to market adjustments.

Demand Equation

A mathematical representation of the relationship between the quantity of a good consumers are willing and able to buy and the good's price.