Match Column A with Column B. uses a graphite-coated furnace to vaporize the sample A. GFAAS samples are deposited in a pyrolytic coated graphite tube B. Cold vapor technique used in direct analysis of solid samples and slurry materials C. Hydride generation technique
Q: What is the pH of a 1.3 X 10-4 molar solution of potassium hydroxide?
A: Given :- concentration of KOH solution = 1.3 × 10-4 M To calculate :- pH of solution
Q: What is the pH of a 0.1000 M NH4BR solution? (Kb NH3 = 1.8x10^-5) %3D
A: Given-> Concentration of NH4Br =0.1000 M Kb = 1.8 × 10-5
Q: A mixture of benzene and ethylene chloride obeys Raoult’s law accurately. At 50oC, their vapor…
A:
Q: What is the correct IUPAC name of the Alkyne structure below? 1-попупe 1-octyne 1-decyne 7-nonyne…
A: Note : As per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost…
Q: The flow rate through a channel can be determined using a weir by the following formula: Q =…
A:
Q: Describe Niels Bohr's model of the structure of the hydrogen atom. More than one selection may be…
A: Option A, C and D is correct answer.
Q: 54 What ester is formed when each carboxylic acid is treated with 2-propanol [(CH),CHOH] in the…
A:
Q: How many milliliters of 0.20M HCl is required to neutralize 80.0 mL of O.80 M NaOH?
A: Given :- molarity of NaOH solution = 0.80 M volume of NaOH solution = 80.0 mL molarity of HCl…
Q: In using ATR-FTIR, liquid samples need no additional pressure because it is always in optimal…
A: True
Q: A critical reaction in the production of energy to do work or drive chemical reactions in biological…
A:
Q: Why does the addition of bromine to fumaric acid require a high temperature for the reaction while…
A:
Q: An electrochemical cell is shown below with Zn in ZnCl2(aq) and Cu in Cu(NO3)2(aq), and KNO3(aq)is…
A:
Q: Consider the following reversible processes: XY (s) = x* (aq) + Y" (aq) Ksp1 = 0.25 АB (s) A2* (aq)…
A: Given equations are : Options are :
Q: Determine the rise, run, and slope of the line formed by these points. rise: run: slope: What is the…
A: We have find out rise, run, slope and activation energy for the reaction.
Q: What is the Molarity of 5.00 L of HCL that has been neutralized by 10.0L of 5M NaOH?
A: Given, volume of HCl, V1 = 5.00L Volume of NaOH, V2 = 10.0 L Molarity of NaOH,M2 = 5M Let the…
Q: 4. The redox reaction between KMNO4 and Na C2O4 is shown in equation 1 of the Introduction. A…
A: Given, Volume of Na2C2O4 = 25.0 mL Normality of Na2C2O4 = 0.75 N Volume of KMnO4 = 14.8 mL…
Q: |Analyte may be lost at the ashing stage volatile hydride generated by the reaction that occurs is…
A: GFAAS (Graphite furnace atomic absorption spectroscopy) is a thermal technique so, analyte may be…
Q: What is the molar concentration of Na+ ions in 0.0350 M solutions of the following sodium salts in…
A: Given :- molar concentration of Na3PO4 solution = 0.0350 M To calculate :- molar concentration of…
Q: What is the pH at the equivalence point in the titration of 50 mL of 0.35 M HNO3 with 0.35 M NaOH?
A:
Q: 19. Consider the following solubility equilibrium: BaSOs () Ba (ag) + SO3 (aq) Which of the…
A: According to Le Chatelier's principle, adding additional reactant to a system will shift the…
Q: Mg3(PO4)2 (s) Mg2*(aq) + _ PO43- (aq) Mg2* (aq) PO43 (aq) initial change eqm Write Ksn in terms of…
A:
Q: What type of tertiary interaction do we observe for the two amino acid residues in the box? Draw the…
A: There are 4 types of protein structure- 1- primary structure 2- secondary structure 3- tertiary…
Q: Suppose we titrate 20.0 mL of 0.100 M HCHO2 (Ka = 1.8 × 10–4) with 0.100 M NaOH. Calculate the pH.…
A:
Q: Four liquids are described in the table below. Use the second column of the table to explain the…
A: Given: density of water = 1.00 g/mL Kf of water = 1.86 oC/m Kb of water = 0.512 oC/m Normal freezing…
Q: The equilibrium constant, Kp, for the following reaction is 2.20×104 at 723 K. 2NH3(g) N2(g) +…
A:
Q: Calculate pCd at each of the given points in the titration of 45.00 ml of 0.0010 M Cd with 0.0010 M…
A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: 5. Calculate the pH of At the second equivalence point when 0.10 M trisodium arsenate is titrated…
A: The solution of the given question is
Q: a [ Choose ] b [ Choose ] [ Choose ] d [ Choose ] e [ Choose ] [ Choose ] [ Choose ] [ Choose ] i […
A:
Q: tructure corresponding to each name: (a) N-m ethylaniline; (d) N,N-diethylaniline.
A:
Q: What is the boiling point of a solution made by dissolving 12.34 g of Calcium Chloride, in 123.4 mL…
A: Answer: When a non-volatile solution is added in a solvent it causes an elevation in the boiling…
Q: Solve this equation with the appropriate significant figures. 181.34 x 1930.4582 =
A: The given equation is - - - > 181.34 x 1930.4582 = 350069.289988 =350070
Q: 6.61 From these data, S(rhombic) + O2(g) SO-(g) AHn = -296.06 kJ/mol %3D S(monoclinic) + 0,(g) –→…
A:
Q: N. IZ
A:
Q: Use the data given below to answer the next three questions. 2 N20 (g) + 3 02 (g) → 4 NO2 (g) AH° =…
A:
Q: How many chiral centers are there in this molecule and identify them on the image? Is it delivered…
A: Zero.
Q: The conjugate base of benzoic acid is ___________.
A: An acid after losing a proton turns into a conjugate base.
Q: A mixture of solid calcium oxide, CaO, and solid barium oxide, BaO, weighing 5.978 g is added to a…
A: Answer: In this question first of all we will calculate the moles CO2 consumed and then by the use…
Q: A 0.037 M solution of a weak acid (HA) has a pH of 4.59. What is the Ka of the acid?
A: Given :- Concentration of weak acid = 0.037 M pH of solution = 4.59 To calculate :- Value of Ka
Q: HOCH, 0-CH2 Но H. H OH OH H но CH2OH H H H H OH но H
A: ->Disaccharide form from condensation of monosaccharides .
Q: onsider the equilibrium system described by ne chemical reaction below. For this reaction, p = 109…
A:
Q: What is E°cell (in V) for a redox reaction that has ΔrG° = 300 kJ mol-1 at 25°C ? Assume 2 electrons…
A:
Q: 12. DETAILS MY NOTES A chemist is performing a teration in order to determine the amount of ithum…
A:
Q: Which of the following statement(s) is/are true? (Select all that apply.) ASuniy = ASsys + ASsurr O…
A: The second law of thermodynamics predicts the spontaneous nature of a process. According to this…
Q: Compare the experimental and theoretical results of Benedict’s, Barfoed’s, Selliwanoff’s, Bial’s…
A: The experimental and the theoretical results of Benedict’s, Barfoed’s, Selliwanoff’s, Bial’s tests…
Q: A banned pesticide, DDT, is analyzed through gas chromatography. A DDT standard is diluted…
A: In analytical chemistry a calibration curve or standard curve, is plotted to determine the…
Q: Find the percent dissociation of a 0.130 M solution of a weak monoprotic acid having K 1.5 x 10 3.…
A:
Q: For BaF2 (Ksp = 1.7 × 10–6), will a precipitate of BaF2 form when 0.10 L of 6.0 × 10–2 M Ba(NO3)2 is…
A:
Q: Question 6 In ATR-FITR, an IR beam is directed onto an optically dense crystal with a high…
A:
Q: When a 3.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of…
A:
Q: Draw the starting structure that would lead to the following two products under these conditions.…
A: OsO4 react with alkene gives diol.
Step by step
Solved in 5 steps with 5 images
- A series of reactions is carried out on the alloy (A) formed of two metals, as in the following scheme : Amount of ppt. (B) +H2SO4(aq) +NAOH(ag) +NaOHçaq) Decreases and a Alloy Aqueous solution Ppt. (B) white green ppt. remains What are the two metals forming alloy (A)?.. a) Copper and aluminum b) Copper and iron c) Iron and aluminum d) Iron and lead.The production of group 1 and group 2 metals is accomplished by owing to the difficulty of, these elements. A) electrolytic reduction; oxidizing B) chemical reduction; reducing C) chemical reduction; oxidizing D) zone-refining; reducing E) electrolytic reduction; reducingcable below you will find three descriptions of sclentists engaging In activitles that are part of the sclentifi description missing word? Carl records In his lab notebook the powder In a test tube, the powder melts into a silvery liquld that welghs less than the original powder. that when he heats a red Antolne develops a idea that most substances will chemnically combine with an invisible gas in the atmosphere he calls oxygen. Antoine uses hls ideas to explain burning as the comblnation of a substance with oxygen, and reduction (e.g. durlng che formation of iron from iron ore) as the splitting of a substance from a chemical combination with oxygen. for chemical reactions based around the ohn analyzes all the known compounds of carbon and oxygen. He finds nd writes down a that says the ratio of masses of carbon that combine with 100 g of oxygen in these compounds are always in whole umber ratios (e.g. 2:1 or 3:1).
- Sodium dichromate solution is added to an acidified solution of lithium iodide. Could you please show the detailed steps to the reaction mechanism including how to balance the redox. Thank you!1. A sample of feldspar weighing 1.500g is decomposed, and eventually there is obtained a mixture of KCI and NaCi weighing 0.1801 g. These chlorides are dissolved in H20, a 50-mL pipetful of 0.08333 N AGNO3 is added, and the precipitate is filtered off. The filtrate requires 16.47 mL of 0.100ON KCNS, with ferric alum as indicator. Calculate the percentage of K20 in the silicate.explain the feasibility of refining sulfur and phosphorous in basic oxygen furnace according to the relevant reactions and metallurgical conditions
- A sample of feldspar weighing 1.500g is decomposed, and eventually there is obtained a mixture of KCl and NaCl weighing 0.1801 g. These chlorides are dissolved in H2O, a 50-mL pipetful of 0.08333 N AGNO3 is added, and the precipitate is filtered off. The filtrate requires 16.47 mL of 0.1000N KCNS, with ferric alum as indicator. Calculate the percentage of K2O in the silicate.For Redox Analysis of Iron... ~0.02 M of potassium dichromate is prepared as titrant for dried unknown. ~.3 g of sample, 50ml of 6M HCl, 20mL SnCl2, 10 mL of saturated HgCl2 solution, 60 mL of 3M H2SO4, 15mL of concentrated H3PO4, 100mL DI water. HCl (+ heat in fumehood until samples dissolves), SnCl2 (added with pipet until solution changes from yellow to colorless/light green with 3 drops in excess), HgCl2 (after cooling), H2SO4, H3PO4, DI Water, is added to the sample solution with 8 drops of diphenylamine sulfonate indicator then titrated with the potassium dichromate to a violet blue endpoint. 4. Why is it necessary to carry out the reduction of iron and then the titration, before going on to the next sample 5. If you look carefully, there are pieces of tin metal on the bottom of the SnCl2 reagent solution. Why is it there?For Redox Analysis of Iron... ~0.02 M of potassium dichromate is prepared as titrant for dried unknown. ~.3 g of sample, 50ml of 6M HCl, 20mL SnCl2, 10 mL of saturated HgCl2 solution, 60 mL of 3M H2SO4, 15mL of concentrated H3PO4, 100mL DI water. HCl (+ heat in fumehood until samples dissolves), SnCl2 (added with pipet until solution changes from yellow to colorless/light green with 3 drops in excess), HgCl2 (after cooling), H2SO4, H3PO4, DI Water, is added to the sample solution with 8 drops of diphenylamine sulfonate indicator then titrated with the potassium dichromate to a violet blue endpoint. 3. How would you prepare a complete anlaysis procedure using KMnO4 as the oxidant instead of K2CrO7? Include sample and solution preparation, approximate weights of samples and reagents, procedure and chemical reactions. In particular what is the purpose of the Zimmerman Reinhardt Reagent?
- For Redox Analysis of Iron... ~0.02 M of potassium dichromate is prepared as titrant for dried unknown. ~.3 g of sample, 50ml of 6M HCl, 20mL SnCl2, 10 mL of saturated HgCl2 solution, 60 mL of 3M H2SO4, 15mL of concentrated H3PO4, 100mL DI water. HCl (+ heat in fumehood until samples dissolves), SnCl2 (added with pipet until solution changes from yellow to colorless/light green with 3 drops in excess), HgCl2 (after cooling), H2SO4, H3PO4, DI Water, is added to the sample solution with 8 drops of diphenylamine sulfonate indicator then titrated with the potassium dichromate to a violet blue endpoint. 1. What is the purpose of the phosphoric acid in this experiment? Please be specific. 2. How does the Diphenylamine sulfonate indicator work? What chemical reaction causes the color change? How is an indicator chosen in a redox reaction?OWLY2 Online teac ngagenow.com/ilm/takeAssignment/takeCovalentActivity.do?locatorcign H Image result for sp... M Gmail * Maps E Attendance March. MClassroomClipboar. nami... OYouTube WM RealClean sdep, apter a What is the balanced equation for this reaction? O FeCl2 (aq) + Na,S(aq)FeS(s) +2 NaCl(aq) O IrCl2 (aq) + Naz S(aq) IrS(s) +2 NaCl(aq) O FeCl2 (aq) + Na, SO, (aq)FeSO, (aq) +2 NaCI(ag) O FeCl2 (aq) +Na, S(aq) FeS(s) + NaCl(aq) Correct The balanced equation for this reaction is: FeCl2 (aq) + Naz S(aq) FeS(s) +2 NaCl(aq) b If you combine 27 g each of NazS and FeCl2, what is the limiting reactant? O NazS O FeCl2 Submit Not Visited Try Another Version 10 item attempts remaining du f717. This is used as intermediate to produce malleable cast iron. * O Grey cast iron O White cast iron O CGI O Malleable cast iron 11. is used in the various applications like in the body strueture and e parts of aircrafts because of its high strength te weight ratio and exceller corrosion resistance. W