1. Which gas has the second highest average molecular speed at 400 K? а. Kr b. 02 c. SO3 d. CH4 2. What best describes a sample of equimolar amounts of neon and fluorine gas at 245 K? Answer choice Average molecular speed Average kinetic energy Ne = F2 Ne = F2 A Ne < F2 В Ne = F2 Ne > F2 Ne = F2 D Ne > F2 Ne > F2 3. What is the electron configuration of the valence electrons for the ground state Cr atom? a. 4s2 3d+ b. 4s1 3d5 c. 4s2 3d2 4p2 d. 4s2 4p+

Q: 2. Draw the Lewis dot structure for each of the following molecules or ions. Determine the number of…

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Q: Assume that at 298 K, 2.5 µmol (µ =micro) Ar(g) occupies 72 dm3 and grows to 100 dm3. Calculate the…

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Q: pH=

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Q: 6. Draw each structure below along with its mirror image. Be sure to show stereochemistry (hasl and…

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Q: How many grams of gas are present in each of the following cases? a. 0.100L of CO, at 307 torr and…

A: It is an example of ideal gas equation Here we are required to find the mass of gas present in the…

Q: Calculate the pH of a solution prepared by dissolving 5.00 g of NaCIO in 400.0 mL of water.

A: Mass of NaClO  = 5.00g Volume of solution = 400.0 mL=400 ×10-3L Ka = 2.9 × 10-8

Q: 2 N205 (s) 54 NO, (g) + 02 (g) AG;° (kJ/mol) N2O5 (s) 117.7 NO2 (g) 51.8

A: From the standard Gibbs free energy data □G° = [Total Gibbs free energy of products] - [Total Gibbs…

Q: The Gatterman-Koch reaction can be used to make aromatic aldehydes. co `H. HCI a) Draw 3 Lewis…

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Q: 5. How to prepare 50mL of 375 mM citrate buffer pH 1.8 (8% (v/v) ethanol)

A: Concept:  Buffer solution: a buffer solution ( pH buffer or hydrogen ion buffer) is defined as an…

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A: The organic compound is formed by two main elements, carbon, and hydrogen. The specific group of…

Q: 1. O3 2. HOẶC

A: The product of the above organic transformation is given below

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Q: O The reaction is never spontaneous. O The reaction is only spontaneous at high temperatures. The…

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Q: CHM 1321EV –- Organic Chemistry I 15. Use a flow chart to illustrate how you could separate each of…

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A: We are given the standard cell potential, Eorxn of the redox reaction and we have to find whether…

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A: Solution- Charles's law- It states that volume of gas is directly proportional to its absolute…

Q: A Sodium Chloride (0.1920g) NaCl was assayed using volhard Method, using 52mL of 0.0975N AGNO3 and…

A: Given that -  Mass of NaCl = 0.1920 g  Normality of AgNO3 = 0.0975 N  Volume of AgNO3 = 52 mL…

Q: *19. Following are the NMR spectra of three isomeric esters with the formula C;H14O2, all derived…

A: First we have to calculate the double bond equivalence (DBE) of the moleculer formula C7H14O2 by…

Q: What is the pressure in a 9.00 L tank with 77.1 grams of fluorine gas at 355 K?

A: Ideal gas equation is given by,    PV = nRT  P = Pressure  V = Volume n = number of moles R =…

Q: Draw the structure of the following and exposed each compound to oxidation of…

A: Thiols are similar to alcohols. In thiol -SH functional group present and in alcohol -OH functional…

Q: Match each spectrum to the appropriate compound and assign the resonances of the spectrum to the…

A: To match the spectrum with the compound and label the peaks.

Q: What is the binding energy in kJ/mol La for lanthanum-138? 8.1x10^8 x kJ/mol 57 H+ 81,n-7La The…

A: The binding energy can be calculated as follows

Q: The anode compartment of a galvanic cell consists of a Zn anode immersed in 0.05M ZnCl2 The cathode…

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Q: g. Cooling the reaction down. Does the value of K change? How h. Adding NH3. Does the value of K…

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Q: Be sure to answer all parts. The reaction 2A B is second order with a rate constant of 51.0/M min at…

A: Reaction rate for second order reaction is :-  Kt = 1/[A]t - 1/[A]o  Where  K = rate constant t =…

Q: =1,0°H]

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Q: Exe. The decomposition of hydlrogen perokide in to water and OKygen hasbeen found to be of first…

A: Formula used : For 1st order equation is ln[A] = ln[A]o -kt  where [A] is concentration at time t…

Q: Some Radioactive Isotopes Useful in Medical Imaging Mode of Isotope Decay Half-life Use in Medical…

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Q: Which of the following describes the reaction: 10 TI → °,e + 0Pb 2101 82 Obombardment reaction…

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Q: (ii) from

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Q: A) Grignard reagents are prepared from elemental magnesium and an alkyl halide. B) Grignard reagents…

A: Grignard reagents are used to convert carbonyl compounds to alcohols.

Q: Balance the following redox reaction in acidic solution.

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Q: Calculate the atom economy of the balanced reaction of 3-nitrophthalic acid to luminol.

A: The given reaction is conversion of 3-nitrophthalic acid to luminol. We have to calculate the atom…

Q: g redox reaction in basic solution. 2-, 3+.

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Q: An electric current of 25.80 A transports 0.30 kC of charge. Calculate the time this took. Be sure…

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Q: In the analysis of a sample for KH2PO4content, a sample weighing 0.3994 g required 18.28 mL of…

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Q: 6. Draw the most appropriate Lewis structure(s) for the ion CIO. What is the electron domain…

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Q: What volume of 1.18 M NaCI solution contains 159.8 grams of NaCl? Answer:

A: The concentration of any solution can be expressed in terms of molarity. It is given by,…

Q: How much heat is required to raise the temperature of 55 grams of water from 16 degrees Celsius to…

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Q: 2 Propose a mechanism for copper mediated Chan-Lam coupling of aryl boronic acids and benzoic acids…

A: Interpretation- We have to propose a mechanism for copper mediated chan-Lam coupling of aryl boronic…

Q: CH2CH3 H3C, а) HO H. NH2 CH2CH3 CH2CH3 H. NH2 b) HO NH, ÕH NH2 ÕH NH2 ÕH

A: For these type of questions, we have to first convert the given Newman projection formula of the…

Q: Solid barium nitrate is slowly added to 75.0 mL of a 0.0478 M ammonium sulfite solution. The…

A: 1) Given :     [SO3-] = 0.0478 M BaSO3 Ksp value = 8.0 x10-7   Finds : To calculate the…

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Q: 6. Which gas is least dense at 1.03 atm and 301 K? a. CO2 b. Ne c. N2 d. Хe 7. A 1.2 L sample of an…

A: To find which gas is least dense, we have to use ideal gas equation i.e.  PV = nRT

Q: the structure of the alkenes which will generate the following products under the reaction…

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Q: 19. What is the pH of a 1.0 L buffer made with 3.00 mol NH, and 2.50 mol NH after 0.325 mol NaOH was…

A: pH of a buffer solution can be calculated using the Henderson - Hasselbalch equation.

Q: Number of atoms of Carbon in 9 moles of C4H10 are: O 24.09x10^23 O 3.74x10^23 O 216.79x10^23 O…

A: Avogadro's number is the number of units in one mole of any substance ( molecular weight…

Q: Solid barium nitrate is slowly added to 75.0 mL of a 0.0478 M ammonium sulfite solution. The…

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

Q: Assuming the air is made of nitrogen, determine the rate of effusion into the room Determine the…

A: Graham's law of effusion is defined as the ratio of the rates of effusion of two gases at sane…

Q: A Но D .CI 1-ВНСу2, THF 2* H2O2, NaOH

A: #A: Here the reactant is a ketone, and the product is an alcohol which is a reduced form of ketone.

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.