Question

question 8 (1 point)
how many moles are 8.38 ml of acetic anhydride? report answer with correct
significant figures. do not include units in your response. do not use scientific
notation.
your answer:
answer

Explanation:

Step1: Find the density and molar mass of acetic anhydride

The density of acetic anhydride is \(1.08\space g/mL\), and its molar mass \(M = 102.09\space g/mol\).

Step2: Calculate the mass of acetic anhydride

Use the formula \(m=
ho V\). Here, \(V = 8.38\space mL\) and \(
ho=1.08\space g/mL\), so \(m=(1.08\space g/mL)\times(8.38\space mL)=9.0504\space g\).

Step3: Calculate the number of moles

Use the formula \(n=\frac{m}{M}\). Substitute \(m = 9.0504\space g\) and \(M = 102.09\space g/mol\) into it, \(n=\frac{9.0504\space g}{102.09\space g/mol}=0.0886\) (rounded to three significant figures).

Answer:

0.0886