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Question: the data and questions are below...

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The data and questions are below
Procedure Start a boiling water bath in a 600 mL beaker on a hot plate set to 250 C. Prepare two ice baths one of which will be used to chill DI water contained in a 125 mL Erlenmeyer flask. Set up a vacuum filtration apparatus using a Buchner funnel and filter paper circle. Label all filter paper using pencil, then record exact masses. NOTE: For future lab experiments, paragraphs such as the above will not be available Students will need to determine what to prepare in advance from the procedure Prepare a mixture of NaCI, Sio2 (sand) and Benzoic Acid by adding 0.5 g (record exact mass) of each in a small beaker (tare before adding each substance). Transfer to a mortar and pestle, and crush/mix well to a fine powder. Measure 0.5 g sample (record exact mass) of the mixture into a small Erlenmeyer flask. Add 10 mL acetone and swirl to mix well. Using gravity filtration, filter the mixture into a 250 mL Erlenmeyer flask thru a weighed filter paper (11- 15cm) labeled A Evaporate the filtrate in the hot water bath (use a ring stand and clamp to hold the flask firmly in the bath). When dry, add ~5mL of DI water to the flask and heat directly on the hot plate Heat to boiling while swirling, and add more water drop-wise until all solid is dissolved. Remove from the heat and place on the bench to slowly cool at room temperature. Once cool to the touch, place in an ice bath to promote more crystal formation. Filter through the vacuum filtration apparatus thru a weighed filter paper abeled B). Allow solid to AIR dry overnight (or oven dry at low temp) and take mass. Perform duplicate trials of melting points. Based on solubilities, determine which substance(s) is(are) on filter papers A and B
NaCI 0.5048g Sand (SiO2) 0.5090g Benzoic acid 0.5050g Mixture of above substances after crushing to a well powder 0.4995g Filter paper A 0.9478g Filter paper B 0.2898g After AIR drying overnight Substance on filter paper A: 0.3173 Substance on filter paper B: 0.3985 Determine the % composition of the original mixture from the masses used to prepare the mixture. From this % composition, calculate the gram amount of the benzoic acid to be isolated by multiplying the mass of the sample mixture aliquot by the decimal fraction (based on the % composition) of benzoic acid. Then, with the recovered mass data for benzoic acid, calculate the percent recovery based on the calculated gram quantity Also, perform a % error calculation for your observed melting points. This will be done by using the average of the melting point range for each trial Calculation equations (include units and the mindful of significant figures) %composition: stated component mass/measured total mass* 1 00% NOTE: (mass of sample mixture aliquot) *(decimal fraction of benzoic acid)-expected mass of benzoic acid %Recovery recovered sample mass/expected mass of benzoic acid * 100% %Error-1(Act. mp )-( Obs. mp.)(Act. m p.)* 100%
1. Briefly explain whether this experiment is based on physical properties or chemical properties. 2. Briefly discuss the solubility of sand, benzoic acid, and sodium chloride with regards to the experiment. 3. Briefly discuss how the solubilities in Question 2 relate to the substances found on filter papers A and B, and the final filtrate.
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