Question

1. base your answer(s) to the following question(s) on the information below.

a 150.-gram liquid sample of stearic acid, c₁₇h₃₅cooh, is cooled at a constant rate. the temperature of the sample is recorded at 2 - minute intervals in the data table below.
cooling data for stearic acid

determine the gram - formula mass of stearic acid.

Explanation:

Step1: Find the atomic masses

• The atomic mass of \(C\) (carbon) is \(12\space g/mol\).
• The atomic mass of \(H\) (hydrogen) is \(1\space g/mol\).
• The atomic mass of \(O\) (oxygen) is \(16\space g/mol\).

Step2: Count the number of each atom in \(C_{17}H_{35}COOH\)

• For \(C\): There are \(17 + 1=18\) atoms.
• For \(H\): There are \(35+ 2 = 37\) atoms.
• For \(O\): There are \(2\) atoms.

Step3: Calculate the gram - formula mass

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Answer:

\(285\space g/mol\)