For which one of the following substances is the standard enthalpy of formation, DHƒ, equal to zero? carbon dioxide [CO₂(g)] water [H₂O(1)] carbon dioxide [CO₂(s)] lead [Pb(s)] tin [Sn(g)]

Q: ∞o... + H₂O H 1+

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Q: HNMR 08 0.6 intensity 0.4 το 7.5 Τ 7.3 ppm 72

A: We are given with 1H- NMR spectrum in which we see 4 multiplets in the range of 6.95-7.45 ppm.

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A: Given that: Mass of water = 48.6008 g Mass of NH4Cl = 1.9644 g

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A: To solve this problem we have to know about regioselective and stereospecific  .

Q: Use the following information to answer the next question. 2Na(s) + I₂(s) → 2NaI(s) The standard…

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A: The given reaction is  A2 + B2 ↔ 2AB Initial concentration of both A2 and B2 is 4 M after 10 minutes…

Q: <Homework #11 Question 5 Gibbs free energy (G) is a measure of the spontaneity of a chemical…

A: Given ΔH°rxn = -1684 kJ = -1684 x 103 J TΔS°rxn = -543.7 J/K

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Q: Starting with diethyl malonate, and using any other reagents of your choice, show how you would…

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Q: Choose the best description for the selectivity/specificity of the transformation shown below:…

A: Introduction :- Regioselectivity :- The reaction in which there is possibility to form two or more…

Q: How many grams of solid water can be melted with 1.55kJ of energy?

A: Given: Molar heat of fusion of water(∆Hfus ) = 6.01 kJ/mol  Heat energy(q) = 1.55 kJ

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Q: The half-life for the zero order reaction A→ Products is 276 s. What is the value of the rate…

A: given  half life(t1/2) = 276 s initial  concentration ([A]o )= 0.393 to find  rate constant (k)

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Q: Write the symbol for alpha beta and gamma radiation. Include atomic mass and atomic number

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Q: Consider the reaction 3X + 2Y-> 5C+4D How many moles of X are needed to produce 24.00 moles of D? If…

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Q: 9. Draw the major organic product(s) for the following reactions. OCH3 0- pog OH NO₂ Br2 HNO3 H₂SO4…

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Q: Experimental Data and Observations Solution LICI NaCl KCI CuClz BaCkz CaCl₂ orange orange orange…

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A: To find the conjugate acid of a base, we just need to add a H+ to the base.

Q: What are the mole fractions of each component in a gas mixture consisting of 18.0 g 48.8 g of N₂ and…

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Q: Your Turn! Predict the major products formed when 2–methyl–1–butene reacts with: a) H2, Pt/25 °C…

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Q: Spectrum 2A: 12 Relative peak areas 1 Spectrum 28: 10 180 160 140 8 120 6 PPM 100 PPM 80 4 60 7/11…

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Q: 9.35 Draw the products of each of the following acid-base reactions and then predict the position of…

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Q: From the spectra A-J and in the NMR Spectra tile, select the letter that corresponds to  1. methyl…

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Q: 8. Design a synthesis of the target molecule from the starting material shown. Хон Хон на бои heat…

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Q: The combustion of butane produces heat according to the equation 2C4H10(g) + 13O2(g) → 8CO2(g) +…

A: Given balanced chemical equation  2C4H10(g) + 13O2(g) → 8CO2(g) + 10H2O(l) ΔH°rxn = –5,314 kJ/mol…

Q: chunk of magnesium weighing 18.1 grams and originally at 97.12 °C is dropped into an insulated Cup…

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Q: 3. At the end of your ester synthesis, you will have a reaction mixture. Fill in the compounds in…

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Q: 9. A chemist wants to prepare 12(s) and has the following reagents; NaBr(aq), Cl2(g), NaCl(aq),…

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Q: There are 20 common, naturally occurring amino acids from which all proteins are derived (as will be…

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Q: Draw the starting materials needed to complete this Robinson annulation reaction in basic conditions…

A: Given that, a compound is shown below We have to draw the structure of the Michael acceptor and the…

Q: What is the Gibbs free energy for this reaction at 3652 K? Assume that AH and AS do not change with…

A: GIVEN:- ∆Hrxn = -1684 KJ = -1684000 J ∆Srxn = -543.7 J/K Temperature (T) = 3652 K    (Given in…

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Q: 2+ + A solution contains 0.0410 M Ca and 0.0900 M Ag. If solid Na3PO4 is added to this mixture,…

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Q: 1. What is the molarity of a solution that has 5.00 moles of solute and 2.05 Liters of solution? 2.…

A: Given, moles of solute = 5.00 mol  volume of solution = 2.05 L  we know,  =&gt; molarity of solution…