What is the molar mass of 27.8 mg of a compound that is made up of 3.80 x 1020 molecules? 44.1 g/mol O 0.0227g/mol O 57.0 g/mol 88.2 g/mol

Q: starch. 3. In plants, glucose molecules are joined together to form the polymer cellulose. U C I (a)…

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Q: 4) Two notable physical properties of oxygen are its low solubility in water and a density greater…

A: We have find out the answer.

Q: An electric range burner weighing 655.0 grams is turned off after reaching a temperature of 497.5°C,…

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Q: The empirical formula for trichloroisocyanuric acid, the active ingredient in many household…

A: Empirical formula : Simplest whole number ratio of a compound is called empirical formula…

Q: Calculate the concentration of vibranium(IV) cation, Vb4, in a saturated solution of VbCl4 (Ksp =…

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Q: Given the standard enthalpy changes for the following two reactions: ΔΗ° = 9.2 kJ (1) N₂(g) + 2O2(g)…

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Q: 3. Use retrosynthetic analysis to show you could use a cyclic acetal protecting group in the…

A: Keto group is more electrophilic than acid group . So protecting group will connect with keto group…

Q: Corinn bollow the following mixture des devise a Separation scheme that will physically sehrate each…

A: The components of the mixture are sand, toluene, ethyl alcohol, benzene, and iron fillings.  Among…

Q: Cr(OH)3 + ClO3 →CrO² + Cl¯ Match the following for the above reaction. Drag and drop options on the…

A: Oxidation : Loss of electrons with increase in oxidation state .Reduction : Gain of electrons with…

Q: Which functional group can be polymerized to form an organic metal? Oplophol

A: Organic metal are polymers which have conductivity like metal. So polymeric form must contain the…

Q: You continue to impress people at the chemical company and they give you a special assignment.…

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Q: III. I. II. N i 1.CH2 CHCCH3 2. H₂O/H₂0 CH₂CH₂CCH3 O CH₂CH₂CCH3 QH CCH3 CH=CH₂ IV. V. i CH₂CH₂CCH3…

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Q: Complete the table by computing for the unknown parameter. [H+] [OH–] pH pOH 1…

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Q: E 107 100- 90 $840.57cm-195.73 % 1 3819 20cm-1.95.92 T 3355.60cm-1, 96.01% T 80- 70- 60 50 3691…

A: Answer. The vampire fang like structure in the above given spectra at 3480 cm-1 and 3357 cm-1…

Q: QUESTION 25 When 2.5 moles of calcium carbonate is added to 4.8 moles of hydrochloric acid, calcium…

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Q: Calculate the enthalpy change that occurs when 4.63 g of SnC14 (1) reacts with excess H₂O(l) to form…

A: Here, we have to calculate the enthalpy change that occurs when 4.63 g of SnCl4(l) reacts with…

Q: rate of Icorr = 6.0 x 100 A pl-1 and its density is p =

A: Given: icorr=6×10-5Acm-2M=55.8gmol-1ρ=7.8gcm-3

Q: The heat of vaporization of water is 40.66 kJ/mol. How much heat is absorbed when 1.59 g of water…

A: To find how much heat is absorbed (q), • Convert mass of water to moles. • Multiply moles with heat…

Q: What is the work function in J for Ag? a. 7.21E-19 b. 7.53E-19 C. 2. d. 7.58E-19

A: Work function is the minimum thermodynamic work needed to remove an electron to a point in a vacuum…

Q: Et3N ** Et₂O H Find out the product A, B and C. i. i. Me NaNH, NH3 NaNH, B ii. ii. Br H₂O (Weak…

A: Note - The given question is a multiple questions , hence I solved first question according to rules…

Q: What atom interacts with oxygen forming a reversible complex (oxygen can come on and out) with it?…

A: Many transition metals can form reversible complex with oxygen.

Q: 2. A sample of ammonia gas was allowed to come to equilibrium at 400 K. The decomposition is…

A: The equilibrium reaction at 400 K is: 2NH3(g)  ⇌ N2(g) + 3H2(g) ; Kc = ??

Q: A 100ml sample of 0.20M HF is titrated with 0.10M NaOH. Determine the pH of the solution after the…

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Q: HBr + SO2 →SO₂ + Br₂ Match the following for the above reaction. Drag and drop options on the…

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Q: In a Chemistry lab experiment, typically, a solid chloride unknown (not the AgCl product) for…

A: The undried sample of solid chloride will consist of water , metal and chlorine in it. Since the…

Q: This is a three-part question about a tripeptide. Answer all three sub-questions. The pKR of side…

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Q: e the following redox reaction. What are the coeffici HNO 3(aq) → Zn 2+ (aq) + NO(g) O=4, NO = 2…

A: Reaction,  Zn + HNO3  ----> Zn2+ + NO USing oxidation number method  3Zn + 2HNO3   +6H+  ---->…

Q: Calculate AH-AU C(s) + 1/2 O₂ (g) ----> CO (g) A) 1.24 kJ/mol B -2.48 kJ/mol C D E -3.72 kJ/mol…

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Q: container is filled with 27.6 L of oxygen gas at STP. Approximately what mass of oxygen would there…

A: Volume of Oxygen gas = 27.6 L At STP-> T = 273.15 K P = 1 atm

Q: Arrange the following compound in the order of increasing acidity (least acidic first) I)…

A: Given compounds: I) Cyclohexanol II) 4-Nitrophenol III) Phenol IV) 4-Chlorophenol The acidity…

Q: Given : 2NO(g) + O₂(g) → 2NO₂ (g), AH = - 114.6 kJ/mol Calculate the heat evolved when 1.26x104 g of…

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Q: In an experiment, it is found that the pH's of four salts, AA, AB, AC, and AD are 5.0, 6.5, 11.0 and…

A: Given:  The pH values of AA, AB, AC and AD are 5.0, 6.5, 11.0 and 9.0 respectively.

Q: In the molecule below, which orbitals make up the sigma bond between H and C₁? Which orbitals make…

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Q: If the temperature is -55 °F, what is the corresponding temperature on the Kelvin scale?

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Q: What is the molarity of a solution made by dissolving 39.264 g of CoCl2 in water and diluting with…

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Q: The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. You can purchase…

A: Recall the given reaction,                            Mg s  +  2 H2O l  →  MgOH2 s  +  H2 g45 mL…

Q: The following information is given to you: A+B C AH=32 kJ/mol What is the enthalpy change for the…

A: Given equation is  A + B → C  Reactants react with each other to give products.

Q: What mass, in grams, of NaCl needs to be added to 1.7 kg of water in order to create a solution with…

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Q: Iodine-123 is used for imaging the thyroid gland and decays at a rate of 0.0522 hr-1. If 40 mg of…

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Q: Determine the number of sigma (a) and pi (m) bonds in the molecule shown on the left below.

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Q: Question 6 What is the formal charge of As in AsO4³-? A) -2 B) -1 C) 2 D) 0 E 1

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Q: what other info can be added?

A: Here we have to see what are the physical properties of oxygen other than its low solubility in…

Q: 6. A 400-g sample of water contains 4.50 x 10 g of arsenic. a. Calculate the concentration of…

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Q: HO ·||| I OH a. 2S,4S O b. 2R,4S C. 2S,4R O d. 2R, 4R

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Q: Ammonium sulfate, (NH4)2SO4, is used in fertilizers to provide nitrogen for the soil.  a. How many…

A: Given,  Ammonium sulfate (NH4)2SO4 ,  The number of formula units present in 0.200 mol. of ammonium…

Q: QUESTION 16 A compound is found to contain 26.56% potassium, 35.41% chromium, and the remainder…

A: Determination of empirical formula  The percentage composition of elements present in given compound…

Q: Ignition wires heat sample Water Stirrer Thermometer Insulated Sample Burning Steel outside dish…

A: Given the mass of isopentathalic acid, C8H6O4 taken = 0.7264 g  Since the temperature of the water…

Q: Calculate enthalpy changes for the following: a. 0.080 g of sulfur (rhombic) burns, forming SO₂(g)…

A: Here, we have to find the enthalpy changes of the given processes.

Q: Rank the following anions in order of increasing base strength (least basic first).

A: Given : structure of molecules Basic strength is inversely proportional to percentage s character

Q: All of the following alkyl bromides react by SN2 substitution when treated with sodium cyanide.…

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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.