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- Which is the most appropriate way to dispense liquid using a dropper (vertical, 45° angle, or horizontal? Justify your answerConsider organic compound A that has Kether/water = 4.0. Calculate how much of 10.0 g of A will be found in the ether layer after it is shaken in 100 mL of ether and 100 mL of water.What are the dispersed phase and dispersion medium in milk?
- Which of the three methods, (Use of Separatory Funnel, Decantation or Use of Pasteur Pipette) do you believe is most suitable for transferring large volumes of liquid mixtures and why?8:27 O O L O * * a 35% . Sign in to edit and save changes to this file. 22- LeN Aum Might Aum Len ventrice Rght vertricie Aorta | Pulmorary Veins | Pulnanary Artary | Superiar Vera Cava inferior Vena Cava Bicuspit valve Tricuspid vave ortie valve Puamonary valve 23 - II. Balance the equations below. 1. N2 + H2 NH2 KC1O3 → KCI + O2 NaCl + F2 → NaF + Cl2 7. P+ O2 → P2O5 3. KCIO3 → КСІ + O2 8. H2 + O2 → H2O 4. S2 + O2 SO3 9. H2O + O2 - H2O2 5. Ag2O → Ag + O2 10. CH4 + O2 CO2 + H2O III. Illustrate or draw the following Star Constellation. ORION URSA MINOR CASSIOPI II 6. 2.3. ¿Cómo se preparan 1.0 L de solución de etanol al 12.0 %v/v? 4. ¿Cómo se preparan 500.0 ml de una solución de C5H1205 0.125M? 5. ¿Cómo se preparan 500.0 g de solución de C5H1205 al 0.100 m?
- The rate of settling for 2.5 microgram powder in glycerin is 4.25*10^-8 How did we get this result? What is the equation?When checking the melting point of your impure sample, what temperature should you set as the starting temperature (the SET temperature) and what should the ramp rate be? For example, if the sample is believed to melt at 70°C, at what temperature should you begin to heat the sample?xlYXJuZXItdWkvc2Vjb25kYXJ5L3VzZXItYXNzaWdubWV. Course Activity: Identifying a Substance by Its Properties ubstance 9 of 10 SU0odsagen aic uno container labeled water, and pour one tablespoon (15 mL) of alcohol into the container labeled alcoho Note that you now have three containers labeled unknown, water, and alcohol. For Part A Water and rubbing alcohol have distinct properties and will react differently with the same substance. Observe these properties of water and rubbing alcohol: color, smell, and ability to dissolve salt. Record your observations in the table. To observe the solubility of salt in the liquid, put one-quarter teaspoon of salt into each container and stir. You may weigh out 1.5 g of salt on the electronic balance if you don't have a one-quarter teaspoon measure. nents BIUX' X, Font Sizes A 三 三 耳昌 三 三 Water Rubbing Alcohol Color Smell Solubility of Salt Characters used: 60 / 15000
- (1) A plastic piece was being analyzed by flotation methods. The piece of plastic was suspended in a solution which had an equivalent density. 8.26 mL of this solution were placed into a measuring device that had an empty mass of 43.33 g. The new mass of the device and solution was 52.17 g. Use this information and determine the density of the plastic (i.e., same as the density of solution!). (note, i.e. stands for "id est" in Latin. It is identical to "that is" in English) thatBased on the melting point of your impure solid, you look at the given samples and believe you havecompound A. Compound A is recrystallized using a mixed solvent system of ethanol and water. You add1 ml of hot ethanol to your sample and it doesn’t completely dissolve. You continue to add hot ethanolbut there isn’t any change. Some solid remains. What should you do next?5. In preparation for the analyses of other types of samples that may reach your laboratory, the supervisor tasked you to research different extraction procedures for the analyses of Tetrahydrocannabinol (THC) and other related compounds so that you can purchase different extraction instruments. How will you convince him to buy a Supercritical Fluid Extraction Instrument? C