If given the option between using a P1000 and a P200 pipetter to dispense 200 uL, the P200 should be chosen as it can pipette that amount with greater
Q: How would you prepare 1ml of a 0.5wt% alginate hydrogel with 30mg/ml BSA from stock solutions of…
A: Hydrogel-A polymer network that can extent three-dimensionally. Moreover, these polymeric networks…
Q: Would it be reasonable to store the standardized KMnO4 solution in a screw- cap bottle, if the cap…
A: Answer - According to the question - Given - KMnO4 is not a primary standard and is standardized…
Q: ghs 68 kg is 45 years old and has severe hypomagnesaemia. m sulfate heptahydrate to be given…
A: According to the question, Jack who weighs 68 kg is 45 years old and has severe hypomagnesaemia. He…
Q: Please answer the following questions : 1)If 500 ml of a 15% (v/v) is diluted to 1500 ml . What…
A: Generally chemistry:
Q: ride it related eliter of water, Intions output? outeut? -cl=35-5
A: Given : volume (4L) this focus (0.02 M) from sodium chloride (NaCl) it was relaxed by adding one…
Q: The distribution coefficient for Z between n-hexane and water is 5.85. Calculate the percent of Z…
A:
Q: What are the advantages and disadvantages of liquid-liquid extraction method?
A: Principal of liquid-liquid extraction method :
Q: and
A: Given data set; Mass of empty flask = 351.74 g Mass of heated flask = 354.40 g Molar mass of acetone…
Q: Amylum, commonly known as starch is a white powder with variable molecular formula due to the…
A: The number of moles of amylum, CO2, and water is determined as follows.…
Q: Soil sampled down to 1.8 m was mixed together then analyzed, and found to have 3.0 g C/kg on…
A:
Q: Method of separation/chemical reaction (with brief process) of 1.5 kgs cream of tartar and 2.5 kg…
A: Unrefined substance SOURCING (1). Source (regular/Synthetic) of unrefined substance :- 1)cream of…
Q: Vitamin C Analysis, a student accidentally puts 1.0 g of sodium bicarbonate (NaHCO3) solid into the…
A: The sodium bicarbonate (NaHCO3) solid is a base which neutralises the acid in the reaction. Hence it…
Q: Express 20,000ppb as a percentage strength A. 2% B. 0.02% C. 0.00002% D. 0.002%
A: We have given that Express 20000ppb as a percentage strength A. 2% B. 0.02% C. 0.00002% D. 0.002%
Q: A 500mL bag containing lidocaine at a 0.4%(w/v) concentration is infused at a rate of 30mL/hr. How…
A:
Q: Using the Dumas method set-up, and eperiment was conducted using acetone ( MW=58.08). The mass of…
A: Dumas method is generally used to determine the molecular weight of volatile liquids. The method…
Q: A 10-ml transfer pipet and a 200-ml volumetric flask (TC) are used to make 0.100 M and 0.0050 M…
A: The percent relative error for the three solutions when perfect technique is used can be calculated…
Q: Which of the following is the correct flow of the mobile phase in HPLC? Solvent degasser>Guard…
A: The mobile phase in HPLC is used to transport the sample via seperation column and there by detector…
Q: Given the following situation, choose the best course of action: measuring 500.0 g of distilled…
A:
Q: Time on hotplate (min) 60, 66, 68, 75, 85, 95, Mass of ZnCO3 + Filter paper (g) 3.7123, 2.7035,…
A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…
Q: What volume (in mL) of the prepared high alcoholic elixir is needed if Rx requires 120 mL of an…
A: Answer: In this question we have to mix two different alcohol solution in such a combination that we…
Q: hydragen. Rld= 2.18x 10-l8J. speed af feght = 3.0 Xl0°mb. こ4 calculcate the womelyth f the hynt…
A: Interpretation- To determine the wavelength of light emitted in the given question where all the…
Q: The column was packed with 12 g of alumina. A 50:50 mixture of ferrocene and acetylferrocene was…
A: Total mass of the mixture of (ferrocene + acetylferrocene) = 0.102 g
Q: Discuss the total flow for a 35% venture mask set at 10 liters per minute at the flow meter?
A: Introduction : Venture - masks are the devices which are in the form of intermediate flow devices…
Q: Class A Torsion Balances has a sensitivity requirement of 6 mg with no load on each pan and maintain…
A:
Q: which component in the HPLC, pushes the mobile phase through a column?
A: To determine: which component in the HPLC pushes the mobile phase through a column
Q: a) The relationship between permeate weight and time with fabrics. b) The characteristic of fabrics…
A:
Q: If 250 mL of a 1:800 (v/v) solution were diluted to 1000 mL, what should be the ratio strength? The…
A:
Q: The volume of the solution that can be measured with 5-10 microliter pipette and 2-20 microliter…
A: Volume of solution that is measured using a 20-200 microliter pipette is 0.02 mL to 0.2 mL. Hence,…
Q: 't you need to accurately
A: In the iodometric method the reaction taking place in the determination of copper is represented by…
Q: Make a schematic diagram for the procedure below: A. Constant weighing of the crucibles Bring two…
A: A question based on analytical process that is to be accomplished.
Q: 3. flask with filter better than The flask without filter. O False O True
A: Answer is True Please find the below explanation.
Q: Please show your own work. 2. For a flow rate 0.8 m'.s' how many rapid filter sand boxes of…
A:
Q: (i) Pure RSOP86 powder has a melting point of 130 °C and a degradation temperature of 340 °C. With…
A: TGA thermograms is an analytical technique which is used to measure the weight loss of substances…
Q: integrator A. measures absorbance data detector B. processes data into the display unit injection…
A:
Q: A micropipette was used to draw 450 microliters of solvent X and when measured using an analytical…
A:
Q: alculate the flow rate in ml/hr . order 40meq/l at 10meq/hr in 1000ml in d5w supply 20m
A: Given: Molecule atom of kcl=20 meq/10ml volume of solution is 1000 ml To calculate the flow rate in…
Q: Lactated Ringer’s/5% Dextrose solution contains: 6 g/L of Sodium Chloride (NaCl MW 58.5) 3.1 g/L of…
A: Each KCl forma 1 potassium ion, K+. Hence mEq/mL of potassium ion is the same as mEq/mL of KCl…
Q: 25L bag was filled with air, a 10uL sample was then injected into the bag to make 50ppmv vapor…
A:
Q: ng the Trials A В Jolume of Vinegar used (ml) 25.00 mL 25.00 mL 25.00 mL /olume after dilution…
A:
Q: Given the following situation, choose the best course of action: measuring 5.0 g of volatile 99%…
A:
Q: What are the different methods to pack a column? Point out two ways in which thev differ from each…
A: A question based on analytical separations that is to be accomplished.
Q: The TD marking on a volumetric pipet stands for temperature dependent O t ime distinct O to deliver…
A: Given that : We have to identify which of the following stands for the TD marking on a volumetric…
Q: You have available a brown material (C:N ratio 60, 45% carbon, bulk density 0.3g/cm3) and a green…
A: Here, C:N ratio is directly proportional to the percentage of C Therefore, 60/25 = 45%/x Therefore,…
Q: describe two ways for preparing 10 mL of 1 M solution from a 10M stock solution in regards to…
A: The concentration of a solution is measured in molarity, that is, number of moles of solute in per…
Q: Which part of the GC equipment does separation takes place?
A: GC (Gas chromatography) is an analytical technique used to separate the chemical compounds of a…
Q: C. A cube of dimensions 10 cm x 10 cm x 10 cm has mass of 1.90 Kg a water content w = 15%. The…
A: This question has multiple parts . As per the guidelines we are allowed to provide solution of…
Q: Using a 10mL pipette, you prepare a standard solution by pipetting 10.00mL of the standard iron…
A: The explanation is given below-
Q: If your cuvette have been dirty, how would this have affected the calculated value kSp?
A: Solubility product represents the equilibrium constant for the solid substance that is dissolve in…
Q: It was required to limit grain size during high temperature processing of copper sheet. and the…
A: We have find out the effects of solute and particles on high temperature grain growth.
Q: An aqueous of 2.0dm3 contains 53.0g Na2CO3 Calculate in a) gdm-3 b) moldm-3
A:
If given the option between using a P1000 and a P200 pipetter to dispense 200 uL, the P200 should be chosen as it can pipette that amount with greater
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- How would you prepare 75 mL of an H2SO4 solution at 20% in weight (density=1.1394 g/mL, richness=227.9 g/L) starting from the commercial H2SO4 solution (98%, density=1.8361 g/mL, richness=1799 g/L)? Please choose among the most appropriate procedure which better describes the preparation of the previous diluted H2SO4 solution: Select one or more: a. Take the required volume of commercial H2SO4 solution with an adequate pipette, pour it into a graduated flask and add water up to the final volume (75 mL in this case). Homogenize the flask by stirring it gently. b. Take a beaker and put about 40 mL of distilled water. Then take the required volume of commercial H2SO4 solution with an adequate pipette and pour them over the beaker. Let the solution be warm and pour the mixture into a graduated flask and add water up to the final volume (75 mL in this case). Homogenize the flask by stirring it gently. c. Take a beaker and put about 40 mL of distilled water. Then take the required volume…If you have 6.76 g of caffeine dissolved in 57.2 mL of water and the extraction coefficient between H2O and CH2Cl2 is 21.51. How many grams of caffeine will extract into the CH2Cl2 layer if you use 89.9 mL?The gravimetric factor used to express CoCBr6·H20 in a sample that is finally weighed as PbClBr is choose below: FW PbClBr / 6 x FW CoCBr6·H20 FW CoCBr6·H20 / FW PbClBr FW CoCBr6·H20 / 6 x FW PbClBr 6 x FW PbClBr / FW CoCBr6·H20
- Calculate the Constant Weight (in grams) of the Empty Crucibles. Show your solution. Crucible No. 1 2 3 Weighing 1 22.6035 22.0223 24.1535 Weighing 2 22.6017 22.0204 24.1533 Weighing 3 22.5994 22.0199 - Weighing 4 22.5992 - - Constant Weight, g ??? ??? ???For relative strength, it is 1 being the highest and 3 being the lowestfrom this pfd of nitrobenzene production show material balance at mixing -the conversion is 99% and production 1000 ton/day
- 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?The volume of the solution that can be measured with 5-10 microliter pipette and 2-20 microliter pipette is 0.005-0.01 mL and 0.002 mL-0.02 mL. The volume of the solution that can be measured with 20-200 microliter is 0.02-0.2 mL. The volume 1 mL of solution is measured with 100-100 microliter which has capacity of 0.1 mL to 1 mL. What would the display read for 0.10 mL, 0.20mL, 0.40mL, 0.60 mL, 1.0 mL read when using the micropipettes mentioned abovedescribe two ways for preparing 10 mL of 1 M solution from a 10M stock solution in regards to equipment precision/accuracy. state pros and cons, thank you.
- The density of the first fraction collected would be expected to be close to a value of ______. 1.00 g./mL 0.895 g/mL 0.789 mL 0.950 g.mLMake a schematic diagram for the procedure below: A. Constant weighing of the crucibles Bring two porcelain crucibles to constant weight by heating to redness for 15 min over a burner (not including the cover; see Figure 1 for heating set-up). Cool the crucibles briefly on clean Al foil-covered wire gauze at room temperature for 5 min and into the desiccator for 25 minutes. Weigh each crucible accurately on an analytical balance. Repeat procedure a and b until two successive weights agree within ± 0.3 mg, be sure that all oxidizable substances on the entire surface of each crucible have been burned off.Amylum, commonly known as starch is a white powder with variable molecular formula due to the different number of repeating sugar units based on the plant that it is obtained from. A sample of amylum in the form of spherical beads was subjected to series of analyses to determine physicochemical properties in the quality control unit of a factory. From the results each bead is found to have a 4.5 mL volume and 1.47 g/mL density. 4 of the beads were placed in a reaction chamber combusted, as a result, 43.1 g CO2 and 14.7 g H2O were obtained. If the molecular weight of the amylum is 972.84 g/mol how many repeating units the starch molecule consist and what is the molecular formula of the starch? [Empirical Formula=CxHyOz, Repeating unit=n, Molecular Formula=( CxHyOz)*n= CnxHnyOnz]
