please answer question number 7, I got 65c for the methanol boiling point .

7 The standard reference value for the boiling point of methanol is 64.5C. Describe the accuracy of the boiling point you measured for methanol and identify sources of error that may account for any difference between your measured value and the reference value. 8 In Part C, you used a physical property, the boiling point, to identify a liquid fom the possibilities given in Table 4.1. Do you think that using a single physical property is a reliable way to identify a substancin ith complete certainty? Explain your