n moles a

Q: How many significant figures does the number 0.00358 have? Group of answer choices a.1 b.2 c.3 d.5

A: Beer's Law  A=ϵbC  Where ;  A = absorbance ϵ =  molar absorptivity  b =  path length of the light  C...

Q: 3.Aluminum Oxide is formed when aluminum combines with oxygen gas in the air. Determine the amount o...

A: Given aluminum oxide is formed when aluminum combines with oxygengas in air.Given the amount of alum...

Q: Citric acid (C6H3O7), named for its natural occurrence in citrus fruits, is produced in large quanti...

A: Given; C12H22O11 + 3O2 ➝ 2C6H8O7 + 3H2O Note: (1Kg = 1000g) Mass of sucrose (C12H22O11) = 600.0 Kg =...

Q: This is the chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE): CH...

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Q: Pb2+ Express your answer in condensed form in order of increasing orbital energy as a string without...

A: Atomic number of Pb is 82. It means it have 82 electrons and as +2 charge it means it lost 2 electro...

Q: Explain why a Büchner funnel is used to isolate the final crystallized product instead of stem funne...

A: crystallized product is a final product formed after reaction in which solids are arranged in form o...

Q: Helium derives its name from the Latin name for the sun. Helium was discovered when spectroscopists ...

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Q: Write the cell diagram for the following cell. + V KCI(aq) Hg,Cl2(s) Pt Hg(1) ZnCl2(aq) uz

A: Anode reaction - Hg(l) ------> Hg2+(aq) + 2e  Cathode reaction - Zn2+(aq) + 2e -----> Zn(s)  T...

Q: Differentiate malleability and ductility of metals.

A: Malleability is a property of metal,by which they can be beaten into thin sheets without breaking.  ...

Q: A mole of a newly discovered crystalline substance weighs 14.56 grams and displaces 2.3 mL of water....

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Q: (Q71) Which of the following accounts for elements in groups exhibiting similar chemical behavior? A...

A: In a periodic table, elements are arranged in a horizontal rows and vertical column. Horizontal rows...

Q: specific heat for iron is 0.444 J/g oC. What is the final temperature of a 41.4 g sample of iron at ...

A: Heat added = mCp∆T m is mass of sample  Cp is specific heat  ∆T change in temperature   

Q: 1- Which statement is not a good practice during weighing in Chemicals should never be placed direct...

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

Q: - [PtCl4]? has a center of symmetry, but [NiCl4]? does not. Suggest a correct shape for each of them...

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Q: What is the mass in grams of 49.60 moles of LICI?

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Q: Draw the product of an SN2 reaction shown below. Include all lone pairs. Use wedge and dash bonds to...

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Q: The molecular formula of naphthalene is C10H8. What is its empirical formula?

A: • We need to write the empirical formula of naphthalene whose molecular formula is C10H8

Q: True or false

A: 6.false  Lower aldehyde like formaldehyde and acetaldehyde are gas at room temperature but butanal i...

Q: 6. How much mass of hydrogen is produced when a half mole of aluminum reacts with excess hydrochlori...

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Q: If a solution of compound X is mcubated with a catalytic amount of enzyme Y the sucrose s rarsfoemed...

A: According to the question, the chemical reaction is: 1 X =>  1 fructose + 3 glucose At equilibriu...

Q: A substance is a solid at room temperature, dissolves in water, and conducts electricity when dissol...

A: Water is a polar protic solvent and it dissolves the ionic compound by breaking the ionic bonds betw...

Q: grams of CaC2 we

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Q: 'H-NMR Spectrum (D2O) 0.41 0.45 0.16

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Q: 86 g of nickel at 150°C was placed in 1.0 kg of water at 27.4°C. Determine the final temperature of ...

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Q: Br t-BUOK t-BUOH

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Q: At equilibrium, the [H+] in a 2.50M solution of a weak acid, HA, is 4.07x10-3M. a) Write an equatio...

A: We would write dissociation equation by dissociating the weak acid into its ions .  For other parts ...

Q: Refurences) TUTOR Phase Changes from Heat Transfer I A 40.2-ml sample of benzene at 34.2°C was coole...

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Q: how many mm3 are in 16.7 cm3?

A: We know,  1 cm3 = 1000 mm3  Given, 16.7 cm3

Q: Why are there only 10 2D plane point groups n crystallography?

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Q: Table of Volume and Pressure V(ml) 1/V P(psi) 8.00 64.31 10.86 47.38 15.92 32.32 18.50 27.81 21.33 2...

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Q: What is the product in the dihydroxylation of (Z)-hex-3-ene? Oso HS

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Q: For the reaction below, draw the major SN1 organic product or products. There is not a shortcut for ...

A: A question based on organic chemistry, which is to be accomplished.

Q: do so, they need to first prepare 500.0 mL of 1.000 M of the Tris buffer solution of pH 7.5000. The ...

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Q: [5] Balance the following redox reaction in acidic solution. CIO3 (aq) + C[(aq) → Cls (aq)

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Q: What is the conjugate acid of each of the following? What is the conjugate base of each? (a) H2S (...

A: (a) H2S (b) H2PO4− (c) PH3 (d) HS− (e) HSO3 − (f) H3O2+ (g) H4N2 (h) CH3OH

Q: QUESTION 2 An unknown compound B is a saturated compound having a molecular formula of C3H&O. Oxidat...

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Q: When 2.0 x 10-2 mole of nicotinic acid (a monoprotic acid) is dissolved in 350. mL of water, the pH ...

A: Nicotine is a weak monoprotic acid so it dissociated in less amount. So we can denotes it by HA .

Q: Write equations for the following examples of radioactive decay: a) a emission by 230U b.) B¯ emissi...

A: Given radioactive decays are : a). α emission by 92U230  b). β- emission by 10Ne24  c). β+ emission ...

Q: Which of the following bonds would you expect to be the shortest? A.) A – A (bond enthalpy = 410 kJ/...

A: Option A. ( A-A )  is expected to be shortest.

Q: A sample of argon gas occupies a volume of 0.065 m at 101.3 kPa and 25.0°C.What volume would the sam...

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Q: help me draw the products when ethyl isopropyl ether is treated with the following reagent: 1.HBr (...

A: The structure of ethyl isopropyl ether is as follows: Ether gives nucleophilic substitution reactio...

Q: at type of bond is f

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Q: How many of the following are found in 1500 mol of benzene? a. Molar Weight of C6H6 b. gmol of C6H6 ...

A: a.Molar mass C6H6 = (6x12) + (6x6) = 78 g/mol    b. Given, 1500 mol of benzene Number of Moles = mas...

Q: Among three bases, X- , Y- , and Z- , the strongest one is Y- , and the weakest one is Z- . Rank th...

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Q: Melting point Conducts electricity when dissolved in water Soluble in water Soluble in oil Crime sce...

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Q: Calculate the ΔHrxn using bond enthalpies for the balanced equation below (Lewis structures picture ...

A: Given;

Q: Data Mass of water: 100.4701g Initial mass of food: 8.7910h Initial temperature of water: 23 degree ...

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Q: For ideal gases with each of the following sets of P, V, n, and T, determine the missing number. Not...

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Q: A solution is prepared by mixing 50.0 mL of 0.50 M CaCl2 with 50.0 mL of 0.50 M CoCl2. When Na2CO3 i...

A: Given,  Molarity of CaCl2 = 0.50 M  Volume of CaCl2 = 50.0 mL Molarity of CoCl2 = 0.50 M  Volume of ...

Q: A galvanic cell is prepared according to the redox reaction shown below. A voltmeter connected to th...

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.