Q: Like metallic crystals, ceramic crystals can have defects. We want to identify the type of defects…
A:
Q: Calculate the percentage of MnO2 (MW 86.937 g/mol) in a mineral specimen if the 12 liberated by a…
A:
Q: Find AS (in J/K) for a reversible isothermal expansion of 0.771 mol of an ideal gas when it expands…
A: In isothermal expansion process the volume of the ideal gas increases and the temperature remains…
Q: Consider the electrochemical cell described by the following reaction at 310 K. The measured cell…
A: Cell potential is 0.242V , R=8.314J/mol-K, F= 96485C/mol , E° (reduction)= -0.17V, E°(oxidation)=…
Q: +1 12. Consider the standard state electrochemical cell containing silver metal in 1.00 Ag in one…
A: At anode always oxidation is occur and at cathode reduction is occur. At anode : loss of electrons…
Q: When performing a gram stain, it is necessary to remove crystal violet stain from any gram negative…
A: Given, Total volume of decolorizer desired = 300 mL
Q: 3. The solubility product constant (Ksp) of iron (III) chloride is 1.7 x 106. Calculate the molar…
A: The solubility product ( Ksp ) a sparingly soluble salt is defined as the product of the molar…
Q: 2. Balanced Chemical Equation Reaction Type: At completion of reactions: Grams of nitrogen Grams of…
A: A question based on concentration terms that is to be accomplished.
Q: Write the balanced equation for the following situation. In addition, list the reaction type. You…
A:
Q: IDENTIFY THE OXIDATION NUMBER OF EACH ELEMENT IN THE GIVEN CHEMICAL FORMULA. -All answers to be…
A: Oxidation number is defined as the total number of electrons that an atom either gains or loses to…
Q: potassium hydroxide to exactly neutralize 25.00 mL of sulfuric acid. Determine the molarity of the…
A: 1.When sulphuric acid (H2SO4) neutralizes with pottasium hydroxide(KOH) produce water and pottasium…
Q: c) A constant current of 0.8 A was used to deposit copper (63.55 g/mol) at the cathode and oxygen…
A: According to Faraday's first law of electrolysis, The mass of an element deposited at an electrode…
Q: The initial rate for the following reaction was measured at different initial concentrations of the…
A: Dear student , since you have posted multiple parts questions we are allowed to solve only first…
Q: How many Si atoms are there in a 59.0 gram sample of Si ? atoms Submit Answer Retry Entire Group 9…
A: Given, mass of sample of Si = 59.0 g Number of Si atoms = ? Note: molar mass of Si = 28.09 g/mol
Q: OH i.) NaNH, ii.) CH₂Br д ОН |
A:
Q: 2. At 2000.0°C, the Keq for the decomposition of carbon dioxide gas to carbon monoxide and oxygen…
A: Equilibrium constant is the ratio of concentration of products to concentration of reactants raised…
Q: (UV spectroscopy lab, organic chem 2) Perhaps it is unsurprising that cyclohexane and ethanol are…
A: To examine a compound in UV spectroscopy, certain solvents are used. The solvent are chosen such…
Q: (9) Guven Solution Contining both 1.5MHI and 1.5m Hock ka for Hod is 3.5 x 10-8 Find the PH n (9)…
A:
Q: 5-methyl-2,6-heptadiene 4-methyl-1,3-heptadiene O2-methyl-2,4-heptadiene 5-methyl-2,3-heptadiene 0…
A: About dienes:
Q: What is the volume, in liters, of 4.00 moles of methane gas, CH4, at 14 °C and 1.20 atm?
A: We can solve this question using the Ideal Gas Equation : PV = nRT where , P = Pressure V = Volume n…
Q: the solubility of silver sulfate in water is determined to be 570 mg/100mL what is the number of…
A:
Q: A 250.0 ml sample of gaseous hydrogen bromide, measured at 22.9°C and 0.930 atm, was dissolved in…
A:
Q: O Na 00₂ Br Br 10. Br Br
A: To choose the correct reagent for the given reaction.
Q: 3) Draw the most stable conformation of (2Z, 4E)-2,4-hexadiene.
A: Confirmation gives the geometric/stereochemistry of the molecules. In given hexadiene either cis or…
Q: Calculate the molar solubility of Ag2 CrO4 in a solution that is 0.01 M in AgNO3. Ksp of Ag2 CrO4 =…
A: Given, The solubility product of Ag2CrO4 = 1.2 × 10-12 The solubility of Ag2CrO4 in 0.01 M of…
Q: Identify the correct order of the steps in the scientific method: [Select] [Select] [Select [Select]…
A:
Q: Chem 129 Topic Set 7 Variations of titration and Buffers G. How would you make 350mL of a buffer…
A: Desired pH of the buffer = 9.00 Desired volume of the buffer = 350 mL Desired concentration of the…
Q: QUESTION 10 How many grams of MgO are produced when 40.0 grams of O2 react completely with Mg? 2Mg +…
A: Here we have to determine the mass of MgO produced when 40 g of O2 react completely with Mg in the…
Q: end with clear liquids, so how to we know if we even did the experiment correctly? How do we know if…
A:
Q: A solution of methylamine, CH3NH2, behaves as a weak base. The equilibrium can be written as: CH3NH₂…
A: Methylamine CH3NH2 is a weak base. It dissociate partially in aqueous solution. CH3NH3+ is a…
Q: 5. Draw the alcohol structure that would produce the following compounds on oxidation and indicate…
A:
Q: Determine the pH of water solutions with the following characteristics. Classify each solution as…
A: The pH of a solution decides whether it is acidic, basic or neutral . The classification of…
Q: [References) The freezing point of mercury is -38.8 °C. What quantity of energy, in joules, is…
A:
Q: What descriptive term is applied to the type of diene represented by 1,5-octadiene ? O alkynyl diene…
A: Each type of diene is represented by the position of two double bonds present in the compound. a.…
Q: Use the References to access important values if needed for this question. a. How many ATOMS of…
A: A mole is defined as the number of particles or constituents present in exactly 12g of carbon-12…
Q: Wt of precipitate (Silver chloride) MW of silver nitrate MW of silver chloride Meg silver nitrate…
A:
Q: 1. Rank the following dienes in order of increasing stability: a. trans-1,3-pentadiene, b.…
A: According to the bartleby guidlines, for the multiple questions I can solve only first one question,…
Q: Stronger bonds will be found where in the infrared spectrum? O Lower molecular ion O Higher…
A:
Q: . Use the following reaction, equilibrium concentrations, and equilibrium constant at a particular…
A:
Q: Platinum are good catalyst but can be poisoned. Platinum can be completely poisoned if the CO…
A: Platinum are highly active catalyst for many heterogeneous processes. Also they have high affinity…
Q: The equilibrium constant for the gas phase reaction 2SO2(g) + O2(g) → 2SO3(g) is Keq = 2.80 x 10-4…
A:
Q: Which of the following compounds will display two triplets and a singlet in the ¹H NMR spectrum? □…
A:
Q: Use the References to access important values if needed for this question. For the molecular…
A: Here we have to determine the conversion factor to convert moles of PCl3 into number of molecules of…
Q: Need help determining the value for Kc for the reaction: 2SO2(g)+O2(g)=2SO3(g), where the…
A:
Q: 7. A balloon is inflated to 344 mL at a temperature of 55°C. The volume of the balloon decreases to…
A: Given initial volume (V1) = 344 mL Initial Temperature (T1) = 55oC…
Q: 13. For the complete combustion of 1-pentene (C-H₁), how many liters of carbon dioxide gas will be…
A: Using ideal gas equation and molar volume at STP is required to obtain the desired values.
Q: According to the following reaction, how many moles of calcium chloride will be formed upon the…
A:
Q: The Common Ion Effect Given P b I 2 ( s ) ⟺ P b 2 + ( a q ) + 2 I − ( a q ) w h e r e K s p = 6.5 ×…
A:
Q: TM H Show the synthetic sequence that converts acetylene to the target molecule (TM) shown below.
A:
Q: 5.48 Draw all possible configurational isomers of the molecule shown here. of the following species…
A: The IUPAC NAME FOR THE GIVEN COMPOUND IS., 2,3-dibromo-4,5-dichloroheptane
Based from the given problem, What is the molecular weight and meq of potassium biphthalate (C8H5KO4)?
Step by step
Solved in 3 steps
- 1. You will use 0.5mM PNPP, 0.2M Tris-HCl, and 1mM P; stock solutions to prepare two sets of five samples (Sets A and B), each with varying P; concentrations. The PNPP concentration for all samples in Set A will be 0.05mM; and 0.150mM for all samples in Set B. Fill out the tables below and use them to prepare your samples. Be aware of the following: • Prepare the samples directly in cuvettes. Prepare one sample at a time to minimize exposing PNPP to air. You can prepare the next sample while the current one is being measured. • Each sample before adding enzyme (i.e., the cuvette only contains PNPP, Pi, and Tris-HCI) is its own blank. In other words, you add the appropriate amounts of PNPP, Pi, and Tris- HCI to a cuvette, press "Measure Blank", then add 100μL of AP to the same cuvette, mix, and press "Measure Sample". • You must blank the instrument (before adding the enzyme) each time you prepare a new sample. Table 1. Sample Set A (PNPP concentration = 0.05mM) Final [Pi] (μM) Vol of…Calculate the percentage CH3COOH in a sample of vinegar from the following data.Sample = 15.00 g, NaOH used = 43.00 ml ; 0.600 N H2SO4 used for back titration =0.250 ml ; 1.00ml NaOH is equivalent to 0.0315 g H2C2O4. 2H2O.3.A sample is known to contain NaOH, Na2CO3 NaHCO3 or compatible mixture of these together with inert matter. With methyl orange, a 1.100 g sample requires 31.40 mL of HCl ( 1.00 mL is equivalent to 0.0140g CaO). With phenolphthalein indicator, the same weight of sample requires 13.30mL of the acid. What is the percent composition of the sample? ww ww
- The graphic below shows the general procedure for titrating the saturated solution of magnesium hydroxide with hydrochloric acid. Select all of the true statements from the choices below. 1. Obtain a saturated solution of magnesium hydroxide. 0 2. Transfer 30.0 mL to an Erlenmeyer flask using a volumetric pipet. Add phenolphthalein. 3. Titrate to a colorless endpoint using 0.0020 M hydrochloric acid. It is important that the aliquot drawn in step 2 does not contain undissolved magnesium hydroxide solid. For titrations of the saturated solutions at elevated temperatures, the solution must be held at high temperature for the duration of the titration. Hydrochloric acid is the analyte in this titration. The volume of liquid in the buret should be read before and after the titration. At the endpoint of the titration, the solution will turn from colorless to pink.3.A sample is known to contain NaOH, NA2CO3 NaHCO3 or compatible mixture of these together with inert matter. With methyl orange, a 1.100 g sample requires 31.40 mL of HCI ( 1.00 mL is equivalent to 0.0140g CaO). With phenolphthalein indicator, the same weight of sample requires 13.30mL of the acid. What is the percent composition of the sample?10. A 0.514 gram sample of NazCO, (106.0 g/mol) was dissolved in distilled water in a 100.0 mi volumetric flask. The molar concentration of Na,CO, in solution is: 0.0485 M 0.0370 M b. 0.4849 M 0.0340 M 0.0330 M d. е.
- If 2 ml of 25 N H2SO4 is transferred to 50 ml volumetric flask and complete to mark with ditilled water, the concentration of acid will be .. M* O 2.5 O 1.5 2 O 0.5 0 1 Non of these1. Molarity of the NaOH solution 0.238 mol/L Trial 1 Trial 2 Trial 2. Volume of H;PO4 added to flask 22.0 mL 22.0 mL 22.0 mL 3. Initial NaOH volume _0.25_ mL _0.75_ mL 0.55 mL 4. Final NaOH volume 17.60_ mL 18.20_ mL _17.90_ mL 5. NAOH volume used for titration to reach green end point mL mL mL 6. NaOH volume used for titration 7. Moles of NaOH used for titration mol mel mel 8. Moles of H;PO4 that reacted mol mel mol 9. Volume of H;PO4 added to flask L 10. Molarity of H3PO4 mol/L mol/L mol/LA mixture may contain NaOH, NaHCO3, Na2CO3 or any compatible mixture of these. A sample weighing 0.245 g requires 10.30 mL of 0.0990 N HCl to reach a phenolpthalein endpoint and an additional 26.25 mL to reacha bromcresol green endpoint. a. What are the components of the mixture? Put Yes for the components and NO if the component is not present. a1. NaOH a2. NaHCO3 a3. Na2CO3 b. Determine the composition anf amounts (in w/w) of each components of the mixture. Put 0 for the component which is no present. b1. % NaOH b2. %NaHCO3 b3. %Na2CO3
- 1. A mixture containing only KCl and NaBr is analyzed by the Mohr Method. A 0.3172-g sample is dissolved in 50 mL water and titrated to the Ag2CrO4 endpoint, requiring 36.85 mL of 0.1120 M AgNO3. A blank titration requires 0.71 mL of titrant to reach the same endpoint. Report the % (w/w) KCl and NaBr in the sample. [Ans. 84.41 % (w/w); 17.59 % (w/w)]A student is asked to standardize a solution of calcium hydroxide. He weighe out 0.920 g potansium hydrogen phthalate (0CO, treat this an a moneprotic adid). It requires 19.0o mt of calcium hydroxide to reach the endpoint. A. What is the molarity of the calcium hydroxide solution IM This calciunm hydroxide solution is then used to trate an unknown solution of hydrobromic acid. B. If 24.8 ml of the calcium hydroxide solution is required to neeutralize 29.1 mt of hydrobromic acd, what is the molarity of the hydrobromic acid solution?E. Analysis of a mixture consisting of NaOH + NażCO3 + inert matter gives the following data: Sample portions are titrated. With one portion, an end point with phenolphthalein is obtained in cold solution, with 44.52 mL of 0.5000 N HCI. The other portion requires 46.53 mL of the acid for an end point with methyl orange. Calculate the percentage composition of the original sample. 10.00 g. Its aqueous solution is diluted to 250.0 mL and two separate 25.00 mL