Dd.82. Q1. Three parameters affect the absorbance of a sample. Which one is the focus ofthis experiment?O the molar absorptivity coefficientO concentration of the absorbing substanceO thickness of the sample containing the absorbing substanceQ3. In experimental Procedure, Part A.1.: For preparing a set of standard solutions ofFeNCS, the equilibrium molar concentration of FeNCS2* is assumed to equal theinitial molar concentration of the SCN in the reaction mixture. Why is this assumptionvalid?O The high concentration of the SCNion ensures that the reaction is favored to the rightO The low concentration of the iron ion ensures that the reaction is favored to go to the rightO This reaction will not reach equilibriumO The high concentration of the iron ion ensures that the reaction is favored to go to the right

Q1) the correct answer is option b i.e Concentration of absorbing substance

Q1. Three parameters affect the absorbance of a sample. Which one is the focus of this experiment? O the molar absorptivity coefficient O concentration of the absorbing substance O thickness of the sample containing the absorbing substance Q3. In experimental Procedure, Part A.1.: For preparing a set of standard solutions of FeNCS, the equilibrium molar concentration of FeNCS2* is assumed to equal the Why is this assumption

Q1. Three parameters affect the absorbance of a sample. Which one is the focus of this experiment? O the molar absorptivity coefficient O concentration of the absorbing substance O thickness of the sample containing the absorbing substance Q3. In experimental Procedure, Part A.1.: For preparing a set of standard solutions of FeNCS, the equilibrium molar concentration of FeNCS2* is assumed to equal the Why is this assumption

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: P.S. 6. A miner was digging up some ore (rock). The ore contains 84% lead(II) sulfide by mass. How…

Q: The use of freons is being phased out because of the damage these compounds do to the stratospheric…

A: a.

Q: مان A₂B(g) +B(g) =A₂B₂ (g) 1 c = 16-4 2 Ag+ 2B (g) = A ₂ B₂ (g) kc = 28.2 Fc for the reactio 6 A (g)…

A: here we are required to find the equilibrium constant for the given reaction.

Q: 2. A mixture of Na2SO4 and its hydrate Na,SO4-10H2O has a mass of 1.5099 g. After heating to drive…

A: Mass percent :- The mass of a component present in 100 grams of a mixture is known as mass…

Q: Calculate the number of cations and anions in 7.18 g of KBr. cations anions x 10 x 10

Q: The mass of an organic compound was found to be 58.053 86 by mass spectrometry. Is the sample C₂HN₂,…

A: The solution is given below -

Q: What is the mass (grams) of salt in 10.0 m³ of ocean water? (1 mol salt = 58.44 g salt, 1 L ocean…

A: Given: 1 mol salt = 58.44 g salt 1 L ocean water = 0.60 mol salt We have to find the mass (in grams)…

Q: A particular protein sample is found to have 1 atom of iron in its chemical formula. If the mass…

A: Number of iron atom = 1 Mass percent of Fe in the compound = 0.330 %

Q: 1231 1. 2. 4 Br OH

A: This is an multi-step reaction..alkyn to halohydrin formation.

Q: A sample of a compound with the molecular formula C20H24N2O2 contains 2.75 x 1024 nitrogen atoms.…

A: Molar mass of any substance is the mass of one mole of the substance, which is expressed as g/mol.…

Q: You wish to prepare 217 grams of 19.7 % MnCl2. You will need_________________ grams of…

A: Mass of mgcl2= 42.74gm Voulme of H2O= 80.3ml

Q: Calculate the molar mass of Iron(III) chloride hexahydrate: FeCl3• 6H20. O 162.29 g/mol O 180.29…

A: Given Molar mass of EDTA disodium salt dihydrate = 372.24 g/mole Molar Mass of FeCl3.6H2O Molar…

Q: 1. What is the mass percent of C in C2O? 2. What is the mass percent of Ca in CaBr2? 3. What is…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Find the molar mass of CO(NH2)2-

A: Molar mass of compound is sum of atomic masses of constituent atoms . Atomic mass of C = 12.01…

Q: What is thé mass percentage of C in codeine, C18H21NO3? Provide an answer to two decimal places.

A: Given : We have to calculate mass percentage of carbon in codeine.

Q: 5. A 1.547 g sample of CuSO4 xH2O is heated to drive off the water leaving behind 0.989 g of…

A: total weight of the sample = 1.547 gweight of anhydrous CuSO4 = 0.989 gno. of H2O molecules in…

Q: Part B 118 mg C6 H12O6 in 5.01 g H20 Express your answer as a percentage. ? mass % = % Submit…

A: Mass% = (mass of solute/mass of Solution) x 100

Q: Consider the following chemical reaction. 3 Zn(C:H:O:):(aq) + 2 Na:PO:(aq) → 6 NaC:H:O:(aq) +…

A: Given: Mass (g) of zinc acetate = 20.5 g The given reaction shows that: 3 moles zinc acetate = 1…

Q: What is the mass percentage of carbon in C7H11O3? Express your answer as a percentage (i.e., out of…

A: Mass percentage of element in compound is defined as percent ratio of element mass to the whole…

Q: You wish to prepare 210 grams of 16.3 % Mg(NO3)2 You will need grams of magnesium nitrate and mL of…

A: Given that we have to prepare a 210 grams of 16.3 % MgNO32 solution. Recall the expression of mass…

Q: A chemical reaction was used to produce 1.61 moles of copper (II) bicarbonate, Cu(HCO3)2. What mass…

A: Given data:

Q: A student performed the identical experiment to isolate Fe, NaCl, and SiO2 in a mixture. They…

A: Mixtures can be physically separated by using methods that use differences in physical properties to…

Q: 5) King Krator the Merciless has called on Pogo, a humble goldsmith, to make a crown for the King.…

A: The mass of gold given by King Krator to gold Smith Pogo is ---- 14 oz. The density of gold=19.3…

Q: STARTING AMOUNT X Determine the quantity of atoms of vanadium in 1.28 grams of vanadium ADD FACTOR…

Q: Determine the mass in grams of 2.67 x 10²¹ atoms of arsenic. (The mass of one mole of arsenic is…

A: The number of molecules or atoms present in the one mole of the substance is equal to the Avogadro…

Q: What mass of compound is present in 5.80 moles of each of the following compounds? H. ON a. Mass b.…

Q: You wish to prepare 204 grams of 14.9% (w/w) NaNO3. Assume that the density of water is 1.00 g/mL.…

Q: Consider these compounds: A. PbBr2 B. Ag,Cro4 C. Pb3(PO4)2 D. Ca3(PO)2 Complete the following…

A: Solubility Product the highest product of an electrolyte's ionic concentrations or activities that…

Concept explainers

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.

Question

Dd.82.

Q1. Three parameters affect the absorbance of a sample. Which one is the focus of
this experiment?
O the molar absorptivity coefficient
O concentration of the absorbing substance
O thickness of the sample containing the absorbing substance
Q3. In experimental Procedure, Part A.1.: For preparing a set of standard solutions of
FeNCS, the equilibrium molar concentration of FeNCS2* is assumed to equal the
initial molar concentration of the SCN in the reaction mixture. Why is this assumption
valid?
O The high concentration of the SCN
ion ensures that the reaction is favored to the right
O The low concentration of the iron ion ensures that the reaction is favored to go to the right
O This reaction will not reach equilibrium
O The high concentration of the iron ion ensures that the reaction is favored to go to the right

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

Consider a 134.5 g sample of the compound manganese(IV) perchlorate. Using the formula Mn(ClO₄)₄ (MM = 452.74), what is the percent by mass of Mn in the compound?
What mass of Cu(IO3)2 can be formed from 0.650 g of CuSO4 · 5H2O? What mass of KIO3 is needed to convert the copper in 0.2750 g of CUSO4 - 5H2O to Cu(IO3)2?
You wish to prepare 232 grams of 24.0 % Cr(NO3)3.You will need_________ grams of chromium(III) nitrate and______________ mL of water.Assume that the density of water is 1.00 g / ml. ( fill in the blanks)
2. Calculate the following, with proper number of significant figures: Molar mass of Al(CH3COO)3 is g/mol In 16.4 moles of Al(CH3COO)3 ... ... the number of grams of Al(CH3COO)3 is the count of AlL(CH;COO); units is ... the number of moles of 6C atoms is mol ... ... the count of 6C atoms is ... the mass of 6C atoms is g The % mass fraction of 6C atoms in Al(CH;COO); is % The % mass fraction of Al atoms in Al(CH;coo)3 is % Name the compound:
What is the mass percentage of Na in Na₂S? Provide an answer to two decimal places.
6. A piece of silver wire has a diameter of 0.392 mm. If silver has a density of 10.5 g/cc, how long (in meters) should you cut a piece of wire to obtain 0.0123 moles of silver?
A. What is the density of an unknown liquid if 15.00 mL of the unknown has a mass of 12.257 g? B. A sample of chromium is heated in a crucible over a Bruson burner until the chromium turns into a grey powder. If the original chromium had a mass of 0.357 g and the chromium oxide has a mass of 0.522 g, what is the empirical formula of the chromium oxide?
5. An impure sample of magnesium chloride has a mass of 50 g. After perfect purification, 45 g of magnesium chloride is recovered. What is the percentage purity of the original sample?
If copper were to be heated to a high temperature and react with O2 in air, rather than in a covered beaker, to form solid copper (II) oxide, what affect would this have on a calculated percent of recovered solid copper