5) A certain compound has the following percent composition: 57.1% C, 4.8% H, and 38.1 % O. If the molar mass of this compound is 126 g/mol, what is the molecular formula?

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Q: 100 80 60 40 20 % of base peak 30 L 40 80 M**# 103 120 160 m/e 200 Mass Spectrum C4H₂NO₂ 280 240

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Q: EtO₂C. H₂N 3 O O₂N IZ N 6 Me -N N (i) (MeO)₂SO₂ HO₂C (ii) NaOH/H₂O (i) SOCI2 (ii) NH₂OH HO₂C O₂N 4 5…

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Q: 5. For each of the following pairs of molecules, state whether the two structures are enantiomers,…

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Q: Which of the following compounds is consistent with the IR spectrum shown below? 100 2000 1500 1000…

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Q: 6. Which of the following half-reaction equations are balanced? I. Br2 (l) à 2Br- (aq) II. e- +…

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Q: Does lavender precipitate confirm the presence of Magnesium ions

A: The details of lavender precipitation experiment is given below

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Q: In an aqueous solution at 25°C, if [H₃O⁺] = 6.3 × 10⁻⁴ M, then [OH⁻] is:

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Q: Can you help me find the enthalpy, entropy and gibbs free energy value for this equation C4H7CI(1)…

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Q: 125 mL of 0.315 mol/L sodium carbonate and 75.0 mL of 0.155 mol/L silver nitrate are mixed.  What is…

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Q: За H₂N 0 NH₂ NH НО H2N, NH NH NH ОН SH NH S NH OH

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Q: A sample of water with a mass of 662.8 g undergoes a temperature change from 81.40°C to 18.91°C what…

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Q: The El-MS spectrum below corresponds to which of the following compounds? Relative Intensity 100- 80…

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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.