Activity 4: Aromatic Water Peppermint water (Simple solution method) Formula Peppermint oil ___ Purified water ___ To make 60ml Materials: Erlenmeyer flask, filter paper
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Activity 4:
Peppermint water (Simple solution method)
Formula
Peppermint oil ___
Purified water ___
To make 60ml
Materials: Erlenmeyer flask, filter paper
Procedure:
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- IZVW @ ol:09 zain IQ li. How many millilitres of concentrated sulphuric acid, 99.0%, density 1.831 g/cm3, are required to prepare 0.6 liter of a 0.2 M solution? Note ( M.wt of sulphuric acid = 98.1 g/mol) * %3D 5.7 ml 18.4 ml 6.5 ml 17.5 ml prepare a standard solution of a potassium Chloride (KCI), 0.3 N in 500 ml of water. (atomic weight : K=19 , Cl=35 ) ? * 1.8 gm 8.1 gm 81 gm 0.81 gm docs.google.com a1) 0.1% w/v = ? mg/100 ml? 2) 0.1% = ? ug/ml? 3)What is the concentration of your stock in ug/ml? 4)The molecular weight of tartrazine is 534.4 g/mole. What is the concentration of your stock solution in mM? Be sure to give your answer in milliMolar to TWO decimal places.How much of the preservative is needed to prepare a 120-mL preparation of Aluminum hydroxide gel based on this formulation? Ammonium alum 800 g Sodium carbonate 1000g Peppermint Oil 0.01% (0.01 g/100mL) Sodium benzoate 0.1% (0.1 g/100mL) Purified water, qs ad.2000 mL a. 0.12 g b. 60 g c. 48 g d. 0.012 g
- Data Table 1 Enter the calculated molarity and measured conductivity values in the table. Data Table 1: Experimental Data Sodium Total Sodium Chloride Standard Chloride Volume Concentration (M or Conductivity (µS) (g) (mL) mol/L) Blank 100.00 8.965 A 0.0059 100.00 В 0.0531 100.00 0.1029 100.00For nonideal solution, like ethanol and water the less volatile component in this mixture has a _____ vapor pressure Group of answer choices chemical less more slightlyP * 00 T 00 3. Properties of Solutes in Aqueous Solutions Conductivity (Properties of Solutions, Part A): 1. How does the increase in solute concentration affect the conductivity of that solution? 2. Comment on the differences in conductivity for tap water, distilled water, ethanol, and glacial acetic acid. Are there differences, why/why not? 3. You tested the conductivities of sodium chloride, calcium chloride, and aluminum chloride. What was the trend in conductivity for these three chloride salts and why? Conductivity and lonic Reactions: A. Complete the table. Put the starting conductivity of each reactant in parentheses, list the conductivity of the mixture, and list the formulas MacBook Air 000 000 DD F7 F3 F4 F5 F6 F8 OLJ 23 2$ ) ( 4. F K H
- Look at the diagram below of a ten-fold serial dilution. Serial Dilution 1 mL stock 9 mL stock solution & 9 ml saline 9 mL saline 9 mL saline 9 mL saline 9 mL saline solution solution solution solution solution 1 mL D2 solution to D3 1 mL D3 solution to D4 1 mL D4 solution to D5 1 mL D5 solution to waste D1 D2 D3 D4 D5 D6 In this diagram, D1 is the original solution. For a ten-fold serial dilution, first add 9 mL of solvent (eg. Saline) to 5 new tubes marked D2-D6. Take 1 mL of D1 solution, add to tube D2 and mix. Take 1 mL of D2, add to D3, and mix. Take 1 mL of D3, add to D4, and mix. Take 1 mL of D4, add to D5, and mix. Take 1 mL of D5, add to D6, and mix. Problem 2. If tube D1 has 100% concentration, then what is the % concentration of tube D2? tube D3? tube D4? tube D5?2. An 88-pound patient will be receiving aztreonam 30 mg/kg (MAX 1 gram) in 100 mL D₁0W. MWaztreonam = 435.43 g/mol General Structure: aztreonam a. If you have aztreonam 40 mg/mL in stock, calculate the appropriate volume, in milliliters, of the stock solution the patient should receive. b. Fill in the values on the table.Density of solution:Trial 1: 1.2 g/mLTrial 2: 1.2 g/mLTrial 3: 1.2 g/mL Average density = 1.2 g/mL What is the relative average deviaion, %?
- Dial 9 F6 O F7 What is the freezing point, in °C, of a 0.325 m aqueous solution of Na2SO3? FP(water) = 0 °C Kr(water) = 1.86 °C/m [?] °C Freezing Point Copyright © 2003-2023 International Academy of Science. All Rights Reserved. F8 Find your Easter DELL F9 prtsc F10 H home F11 Enter = Feedback end F12 Insert delete BackspacePart IV. Preparation of 100 mL 25% Solution X Materials: Solution X, measuring cylinder, distilled water, and parafilm. Show calculation steps. (1) Calculate the volume of Solution X required. (2) Calculate the volume of distilled water required_ (3) Deliver the calculated amount of distilled water in the measuring cylinder. (4) Add the calculated amount of Solution X to the measuring cylinder. (5) Seal the opening of the measuring cylinder with parafilm. Mix well. (6) Transfer the prepared 25% Solution X into a labelled container.Materials Needed solid I2 solid CUSO4-5H20 food dye solid (NH4)2SO4 heavy metals waste container halogenated waste container non-halogenated waste container semi-micro test tubes and rack regular test tubes and rack squash pipettes acetone cyclohexane propan-2-ol Method Part A: Solubility of ionic and molecular solids 1. Place a small amount (about the size of 1 grain of rice, see picture) of copper sulfate into each of three DRY semi-micro test tubes. Add 20 drops of water to the first test tube and gently flick the test tube with your finger to ensure mixing. 2. Repeat step 1 using acetone in place of water as the solvent in the second test tube. 3. Repeat step 2 replacing acetone with cyclohexane in the third test tube. Hold the test tubes against a white background to compare the solubility of copper sulfate in the three solvents and record your results. Discard these mixtures into the heavy metals waste container in the fume cupboard. Once these test tubes have been emptied you…
