Table 1. Observations. (5 points) Observations Type of milk Did it gel? (Y/N) Color of yogurt (smell, taste, color, texture, etc.) Sample-1 Whole milk First batch Sample-2 Whole milk Second batch Sample-3 Variation 2%
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- 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, %?number] 2. Calculate the osmolarity of a solution containing 7.5% dextrose and 0.9% sodium chloride (MW of C6H1407 = 180; MW of NaCl = 58.4) [Round to the nearest tenth) %3D %3DAnswer the following questions in the photo below:
- ll vodafone TR 4G 01:36 @ %100 ( Notlar 1) Question: It is desired to prepare 1 liter of sulfuric acid solution in 6 norms. How many ml of 98% sulfuric acid with a density of 1.84 is required for this?Both A &B pleaseMethanol: Mass oil ratio 6:1 of oil used (g) 100 Volume of oil CH₂ 1 CH used (1) (d = 918 g/l) CH₂ 0.1089 Mass of Methanol used 21.9 - OOC - R Volume Mass Mass of of of glycerol of Methanol KOH measured glycerol used (1) (g) (d=792 g/L) OOC - R" 0.0277 Triglycerides OOCR' + 3 CH₂OH 1 Solve the question regarding the table P.s. find the molecular weight of the compounds it will be needed in the solution. Methanol 21.76 Volume Question: Estimate the average molecular weight of FAME (biodiesel) using the balanced reaction equation. • Write down the overall reaction for the biodiesel production. Based on the material balance for the rxn, estimate Mw of FAME KOH measured (g) (1) (d=1.26 g/1) 17.27 Mass of Biodiseal calculated (1) calculated (d-0.88 g/ml) Mass balance 101.4 Biodiesel 3 CH₂0-COR+ Volume of biodiesel CH₂ 1 CH 1 CH₂ 115.23 - OH OH OH Glycerol
- Data of milk: (first trial) Mass of milk: 104.4579g Concentration of NaOH (M): 0.09639 Volume of NaOH solution used: 5.5 mL Data of milk: (2nd trial) Mass of milk: 103.8405g Concentration of NaOH (M): 0.09639 Volume of NaOH solution used: 5.3 mLSELECT correct responses only 1) Volume percent (v/v%) is temperature-independent. 2) There are three major approaches to expressing solution concentration in terms of percent concentration: weight percent, volume percent, and weight/volume percent. 3) Weight/volume percent (w/v%) is a unit-less quantity. 4) The term 'percent' refers to 'parts per thousand'. 5)A standard solution is a reagent of known concentration that is used to carry out a volumetric titration. 6) The endpoint of a titration is the theoretical point reached when the amount of added titrant is chemically equivalent to the amount of analyte in a sample. 7) A substance that changes color in response to chemical equivalence is known as an indicator. 8) Given a sufficiently diligent and experienced experimenter, it is sometimes possible to reach a titration volume error value of 0.ment Score: n 5 of 26 0% How many grams of dextrose are needed to make 745 mL of a 16.0% (w/v) dextrose solution? Note that mass is not technically the same thing as weight, but the abbreviation % (m/v) is often used interchangeably with % (w/v). mass:
- 4Calculate the freezing point depression and boiling point elevation of a solution containing 4.27g of Sucrose(C12H22O1) and 50.0g of water. (10 pts) Kf= 1.86 degree celcius/molal; and Kb=0.512 degree celcius/molalA chemist working in a hospital clinical laboratory obtained the following values for uric acid in blood serum: 4.63. 4.58. 4,/2. 4. 21, 4.6/ and 4.65 %, a) Use the 95% confidence level to test any dubious values.