Calculate the percent composition by mass of all the elements in urea, (NH2)2CO.

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Q: Can you please solve #9,10,11  show all of your steps and explain how you do it, the second picture…

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Q: B) 4-bromo-1-t-butylbenzene + KNH2, NH3(1), -33°C → (2 products)

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Q: For items 5 to 7, consider the following compounds: LAN w wx t LEN LIN LON 5. contains a quaternary…

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Q: Explain why. following co pounds would have OH O

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Q: If 30.6 calories are required to vaporize 25 g of a substance, what is the heat of vaporization of…

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Q: The equilibrium constant in terms of pressures for the reaction 2 WO₂ (s) + 2CO(g) W(s) + 2C0₂(9) at…

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Q: Give good explanation Calculate the number of grams of Fe2O3 needed to react with 19.0g C…

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Q: ERSION FACTOR: ng/dL of glucose to mmol/L g/dL of Total Protein to g/L

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Q: What is the molality of ions in a solution prepared by dissolving 37.2 g of a soluble salt, MX2,…

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Q: was the mass of O2 0.1691mole

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Q: One component of acid rain can be formed in the atmosphere by the reaction SO₂(g) + H₂O(1)→…

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Q: Can you do d, e and f and explain it? State the mechanism in which through reaction proceeds sn2 or…

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Q: The balanced chemical equation for the neutralization is: H₂SO4 + 2 NaOH → Na2SO4 + 2 H₂O Determine…

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Q: Draw the skeletal (line-bond) structure of (S)-3-ethylhex-1-ene. Use a dash or wedge bond to…

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Q: CaCl 2(aq)+K2CO3(aq)CaCO3(s)+2KCl(aq)  3g of K2CO3 2g of CaCl2                **Precipitate is…

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Q: 5. Custom problem: Limiting and excess reactant, fractional conversion, extent of reaction Consider…

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Q: a. Use the periodic table below to write the formula (including the charge) for the simple ion…

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Q: 4 HNO3(aq) + 5 N₂H₂(1) → 7 N₂(g) + 12 H₂O(g) AH = =- 74. Which statement is correct for the reaction…

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Q: What is the mass percent of a solution prepared by dissolving 32.6 grams of ZnNO3 in 157.2 mL of…

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Q: Combustion of 5.024 mg of coniine yields 13.90 mg CO2 and 6.048 mg of H2O. What is the empirical…

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Q: B. CONVERSION FACTOR: 1.75mg/dL of glucose to mmol/L 2. 8.1 g/dL of Total Protein to g/L 3. 13.3…

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Q: 5.9) How much energy would be required to vaporize (boil) 50.0 grams of each of the following…

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Q: 3. Predict the products of each reaction. A) toluene +1) NBS, ROOR, A; 2) Mg/ether; 3) CH3CH₂CHO…

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Q: Be sure to answer all parts.   The second-order rate constant for the decomposition of nitrous oxide…

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Q: 8. Which of the following bonds are polar covalent bonds? Choose ALL that apply. a. C-H d. N- Br b.…

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Q: For the following reaction, 2HI(g) H₂(g) + I2(9) the equilibrium constant Kp = 2.62x10-2 at 1120 K…

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Q: Cyclohexane derivatives exist primarily in the most stable of the available chair conformations.…

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Q: is essentially the ratio between the reaction rates of a process adjusted for a 10°C temperature…

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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.