Graduated cylinders and pipettes are not particularly accurate nor are your measurements precise. Explain how this affects the reliability of your data (i.e. the observed density of water)? 2 sentences for this question.
Question 2: Why do organic chemists weigh liquid reagents when accuracy is important? 2 sentences.
Question 3: Explain how melting points are used to identify compounds and determine purity. 2 sentences
Question 4: If a melting point is an identifying characteristic of a compounds, why do organic chemists used mixed melting points? 2 sentences.