An Unknown Nonelectrolyte and Nonvolatile Compound Is Dissolved in Enough

question 73

Multiple Choice

An unknown nonelectrolyte and nonvolatile compound is dissolved in enough pure water to make 229 mL of solution. The vapour pressure above the solution drops from 233.7 Torr to 229.1 Torr when 82.3 g of the compound is dissolved at constant temperature. Determine the molar mass of the unknown compound. Assume no change in volume occurs upon dissolution.

• A) 323 g mol^-1
• B) 480 g mol^-1
• C) 414 g mol^-1
• D) 459 g mol^-1
• E) 508 g mol^-1

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Definitions:

Statement of Cash Flows

a financial statement that shows how changes in balance sheet accounts and income affect cash and cash equivalents, and breaks the analysis down to operating, investing, and financing activities.

Investing Transactions

Financial activities related to the acquisition or sale of long-term assets and other investments.

Financing Transactions

Deals and agreements related to raising capital through the borrowing of funds or the issuance of stock in a company.

Ethnorelativistic

Pertaining to an attitude or viewpoint that recognizes and appreciates the value of cultural diversity, understanding that individual behaviors and values are culturally grounded.