Terephthalic Acid, Used in the Production of Polyester Fibers and Films

question 47

Multiple Choice

Terephthalic acid, used in the production of polyester fibers and films, is composed of carbon, hydrogen, and oxygen. When 0.6943 g of terephthalic acid was subjected to combustion analysis it produced 1.471 g CO₂ and 0.226 g H₂O. If its molar mass is between 158 and 167 g/mol, what is its molecular formula?

• A)C ₄H ₆O ₇
• B)C ₆H ₈O ₅
• C)C ₇H ₁₂O ₄
• D)C ₄H ₃O ₂
• E)C ₈H ₆O ₄

Identify the liquidity of different financial accounts and understand their impact on personal finance management.

Calculate the rate of return on savings and understand the effects of interest rates on savings and loans.

Reconcile bank statements and checkbook balances, and understand the concept of outstanding checks.

Understand the impact of tax rates on savings and investments and calculate the after-tax rate of return.

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