Q: What are the requirements of a primary standard?
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Q: How is the molarity of a 0.50 M KBr solution changed when water is addedto double its volume?
A: Molarity is used in the calculation of quantity of solute or the volume of solvent in a solution,…
Q: 2MNO, + 5C,0²- + 16H* → 2Mn²+ + 10 CO, + 8H,0 4. Here, 20 mL of 0.1 M KMNO, is equivalent to
A: Given:- 2MnO4 _ +5C2O42- +16 H+ -------->2Mn+2 +10CO2 + 8H2O. To find:- 20 mL of 0.1 M KMnO4…
Q: What is the pOH of a 1.0 x 10-5 M HI solution at 37 °C? (Kw at 37 °C = 2.5 x 10-14)
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Q: 14. Complete the following. a. Make a graph of the following data points. Is the relationship…
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Q: A 10 ml of concentrated acetic acid was added in a sufficient quantity of water to make 350 ml of…
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Q: A solution of Ca(OH)2 (FM = 74.09) was used in determining the equivalent weight of an unknown acid.…
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Q: Potential energy at top Ep = mgh E = 300 kg Ep=147000 J 9.8 m/s Reminder 100 km 27.8 m/s CALCULATE
A: Given -> Mass (m)= 300 kg Acceleration due to gravity (g) = 9.8 m/s2 Height (h) = 50 m
Q: The value of Kw at 50°C is 5.48 × 10−14. Calculate the OH− concentration from the above solution at…
A: To calculate the concentration of hydroxide ions [OH-] at 50oC The equilibrium express for Kw is as…
Q: PROCEDURES: A) Preparation of three Standard ASA solutions. 1) These solutions will be prepared…
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Q: prepare a solution with a concentration of 0.500 mol·dm⁻³ in a 250 cm³ volumetric flask. [Round the…
A: Concentration (M) = 0.500 M/dm3 Volume = 250 cm3 =250/1000 = 0.250 dm3 Now, we know, Molarity(M)…
Q: Prepare 500g IV pack of 5% m/m KCI. Write procedure how to do this
A: 5%m/m KCL means the 100g of stock contains 5 g of KCl
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Q: You have a material that is 1550 cells/L in water and you want to dilute it in the following…
A: Stock solution, C1 = 1550 cells/L Tube 1 solution (diluted), C2 = 115×1550 cells/LVolume of solution…
Q: A solution of Ca(OH)2 (FM = 74.09) was used in determining the equivalent weight of an unknown acid.…
A: The number of moles of KHP can be determined as follows: Number of moles of KHP = Given mass of…
Q: When balancing Pb0,t Hg lacid sdution, the correct answeeris Pbo,+4H" + A True B False q a+ Pb² in…
A: A balanced chemical equation is the one having equal number of atoms on both sides as well as equal…
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Q: A. Standardization of NaOH Solution TRIAL [HCI] Volume Moles Moles Volume [NAOH] HCI НОEN 25.75 IOH…
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Q: You have Falcon tubes containing 10 ml and you should add ,that you have in a voltage series, from…
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Q: Calculate the concentration of concentrated HCl in molarity. Concentrated HCl has 38% (w/w) HCl and…
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Q: Name and describe the five (5) primary standards used for NaOH.
A: A standard solution is a solution of accurately known concentration. It can be prepared by…
Q: A 10 ml of concentrated acetic acid was added in a sufficient quantity of water to make 350 ml of…
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Q: In the picture below, the flamming test is performed. What exactly is done in the picture and the…
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Q: Suppose that you started with 5 ml of 200 mg/L Cu2+ solution and added it to 1.0g of soil. After…
A: (1) Here we are provided with 5 mL of 200 mg/L of Cu2+ solution which is added to 1.0 g of soil.…
Q: H. HyC-NH, H, H,0 N.
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Q: 1. How many mg of sodium acetate (MW=82.03, feg=1) is equivalent to 1 ml of 0.5 N sulfuric acid? 2.…
A: According to law of equivalence, A reactant exactly reacts with the same number of equivalents of…
Q: 1.Determine the mass of sodium chloride required to prepare 400 ml of a Mueller-Hinton broth…
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Q: 0.02 M NaOH reagent was standardized using 0.1000 g Potassium hydrogen phthalate (204.22 g/mol) and…
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Q: An equalization basin is used to balance pH and alkalinity in wastewater, just before the biological…
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Q: STEP1 Put some FeS particles into a big tube. Add 1 or 2 mL of 18% HCl solution onto FeS particles.…
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Q: A pipet is used to transfer 5.00 mL of a 1.25 M stock solution in flask “S” to a 25.00-mL volumetric…
A: In the given problem, the molarity of the serially diluted solution can be calculated by using the…
Q: H3CsH5O7 (aq) + 3 NaOH (aq) Na;C6H507(aq) + H2O (aq) Citric Acid Trial 1 Trial 2 Show Calculations…
A: The question is based on the concept of titrations. we are performing titration of citric acid with…
Q: Which of the following is used as a primary standard in the standardization of EDTA solution Caco3…
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Q: The standard concentration of a CdCl2 barium chloride solution containing 562 mg / liter is…
A: Note : CdCl2 is cadmium chloride but in question Barium chloride is written .Therefore name should…
Q: A 0.53 g sample containing KBr (MW=119) is dissolved in 50 mL of distilled water. Titrating with…
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Q: H. ОН PCC .COOH COOH or Na,Cr,0/ OH HNO, or HOAC KMNO, or NaOCI Cyclohexanol bp 161.5°C, den. 0.96…
A: The required mechanism is shown below Here initially oxidation of secondary alcohol to a ketone…
Q: 1. Volume of 0.10 M acetic acid needed for 25.0 mL of 0.020 M. mL 2. Molar mass of sodium acetate. g…
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…
Q: ssolve 14.7 grams of sodium hydroxide pellets in 100 ml of carbon-dioxide free water. ool the…
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Q: 1. What the difference between primary and secondary standard substances?
A: Since we only answer one question at a time, so we'll answer the first one. Please resubmit the…
Q: = H30*(aq) + OH¯(aq) Kw = 1.0x10-14 %3D nowers of 10 can be inconvenient, we commonly use the r
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Q: You were tasked to determine the percentages of citric acid in the freshly squeezed and bottled…
A: Citric acid+ sodium hydroxide --->sodium citrate+ water Molarity of NaOH = 1.10M Moles of NaOH=…
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Q: 54.Primary standard used in the standardization of sulfuric acid a. Benzoic acid C. Sodium carbonate…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: a 25.00 mL aliquot of vinegar was diluted to 250 mL in a volumetric flask. Titration of 50.00 mL…
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Q: Determine the volume of glacial acetic acid to prepare 500 ml of a 0.020 M acetic acid solution…
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- What is the simplest CGS unit for "poise"?1. What is the mEq of silver nitrate? 170 0.0170 0.170 17.0 2. How much (mL) silver nitrate is required for the standardization? 4.995 49.950 49.590 45.990 * MW of silver nitrate = 170 g/mol * Please take note that Im looking for the silver nitrateUse the following atomic masses (in g/mol): K = 39.1; Mn = 54.94; O = 16; H = 1; P = 30.97; C = 12.01; Na = 23; Mg = 24.31; S = 32.06; Zn = 65.38; Cu = 63.55 In the standardization of Hydrochloric Acid against pure anhydrous Sodium Carbonate, 1mL was found to be equivalent to 0.05g of the primary standard. Compute for the normality of the acid.
- Help with the following question Ksp for ZnCO3 is 1.46 x 10 ^-10From this given value of Kc: 2H2S (g) <-------> 2H2 + S2 Kc=2.3 X 10-4 at 1404K What is Kc for: H2 + 1/2S2 <--------> H2SWhat is ΔSsurr for a reaction at 28.6 °C with ΔHsys = 38.9 kJ mol-1 ? Express your answer in J mol-1 K-1 to at least two significant figures.
- TVA’s Kingston Fossil Plant near Cedarville, Tennessee, burns about 14,000 tons of coal a day. A typical rail car is 53 ft long from coupling to coupling, weighs 30 tons empty and can carry 100 tons of coal. How many minutes would you have to wait at a crossing for this train to pass, each day, if it was pulled by four locomotives, each 70 ft long and moving at 10 miles per hour through town? Such delays cause decreased ability to provide effective emergency response times and interference with commuters and local freight delivery affecting the local economy.9. What is not a characteristic of a Primary Standard?Is molecules A and B identical? Is molecules C and D identical? What structural feature accounts for the difference in your answers to 1a and 1b? What difference did this structural feature impart on your models?