23. What is the energy change (in I) and wavelength (in nm) of light emitted when an electron transitions from n = 5 to n = 2 in the hydrogen atom? A: -4.578 x 10-19, ;434

Q: Macmillan Learning What is the mass, in grams, of 9.10 x 1024 molecules of methanol (CH₂OH) ? mass:…

A:

Q: 6. What is the frequency (in Hz) of 615 nm visible light? What color is this light? A: 485 x 1014

A: Given : wavelength = 615 nm  Tip : frequency = speed of light ÷ wavelength

Q: 3.2) The energy required to dislod effect is 275kJ/mol. What wave photon to dislodge an election…

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Q: What would be the overall yield to produce the peptide below by solid-phase synthesis if each…

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Q: Juntsey 10.3 THE STEREOCHEMICAL OUTCOME OF AN E2 The examples in the previous section focused on…

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Q: 1. The solubility of L-glutamic acid (an amino acid) in water has been determined to be as follows…

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Q: The following image shows the electrostatic potential maps of two molecules, HI and HCI. Choose the…

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Q: Ethanol, C₂H6 O, is most often blended with gasoline - usually as a 10 percent mix - to create a…

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A: Given Moles of ethane = 5.20 mol To find Moles of CO2 produced

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A: Sn1 reaction proceeds via carbocation intermediate. So, reactant which give more stable carbocation…

Q: The distance between two charges is doubled. What happens to the potential energy?

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Q: What is the degree of substitution of the following alkene? A trisubstituted B disubstituted…

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Q: Potential energy 6.1 Which reaction will proceed the fastest? Reaction coordinate B Potential =14…

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Q: Use the observation in the first column to answer the question in the second column.  At 29°C,…

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Q: Which of the following is a characteristic of an base? has a pH above 7 all of the three bitter…

A: There are 2 types of species-  1- Acid 2- base

Q: Fill in the table below indicating what is important in each category for an SN1 reaction and an SN2…

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Q: circle and assign absolute configuration of the chirality centers. Then draw the enantiomer…

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Q: 5. What is the % (m/m) where the mixture is 2.0 g of Na and 15.0 g of Copper? a. 11.8% b. 13.3% C.…

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Q: Balance the following redox reaction in basic solution. 2+ + N₂H4(aq) + Cu (aq) → N₂(g)+Cu (aq)

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Q: The literature value for the solubility of borax at 25oC is 1.2 X 10-2.  Predict the Ksp at 25oC…

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Q: Every 3.5 years, substance X decays by 50%.  How long will it take for a 96.0 mg sample of substance…

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Q: Convert 0.301 mol of ammonium (NH) ions to equivalents. 0.301 mol NH = Convert 1.95 mol of sulfite…

A: Moles of ammonium (NH4+) ion = 0.301  Moles of sulfite (SO32–) = 1.95 mol

Q: 1. NaBH4 (0.25 eq.), H₂O 2. MgBr (1 eq.), CH₂CH₂OCH₂CH3 3. DCI, D₂O

A:

Q: EXPLAIN THE MECHANISM OF EACH REACTION 3. Hydrogen Addition- Selectivity CH HC- CH₂ HH -H Pd HC- CH…

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Q: broad singlet, 1H (a) NMR Spectrum A quartet, 1H (b) 3 PPM multiplet, 7H (c) -~ 2 1 doublet, 3H (d)

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Q: For the chemical reaction shown, 2 H₂O₂(1) + N₂H₂ (1) ⇒→ 4H₂O(g) + N₂(g) determine how many grams of…

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Q: Consider the following data. 2 NO(g) = N₂(g) + O₂(g) 2 NO₂(g) 2 NO(g) + O₂(g) 2 N₂(g) + O₂(g) = 2…

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Q: The illustration above represents a mixture of hydrogen (blue) and oxygen (red) molecules. If the…

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Q: What is the major product formed when (R)-2-bromobutane is heated with NaOH? O No reaction O a…

A: First reaction that is reaction between R-2-bromobutane react with NaOH to form trans-2-butene…

Q: Consider the following hypothetical chemical reaction: A + B → C + D + E If stoichiometric…

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Q: How many milliliters of a 15.51% CuSO4 solution can be made with 407 mg solute?

A:

Q: Write balanced half-reactions for the following redox reaction: 2+ 12 Cu²+ (aq)+C₂H₂OH(1) + 12 OH…

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Q: Follow the curved arrows and draw the product of an SN2 reaction shown below. Include all lone…

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Q: Suppose 1.0g of Compound A and 9.5g of Compound B are consumed in a reaction that produces only one…

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Q: MgS. 7H₂O is an example of a hydrate. What is the chemical name of this hydrate? 2 magnesium sulfide…

A: Given -> MgS.7H2O

Q: For 1.0L of an acetic acid solution: Ka = 1.8 x 10-5 and [HA] = 0.250M 2. Calculate the pH of the…

A: we have to calculate  pH of solution pKa  pH of solution new concentration of HA new pH

Q: Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO₂H, in enough water to make 5.00 x…

A: Given- Mass of Benzoic acid = 0.235 g Volume of water = 5.00×102 mL Molarity of NaOH = 0.168 M

Q: How many moles of NH3 can be produced from 3.46 moles of nitrogen in the following reaction: N₂ (g)…

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Q: What is the IUPAC name for the molecule shown below?

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Q: Suppose a 500. mL flask is filled with 0.70 mol of NO3 and 1.0 mol of NO. The following reaction…

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Q: Explain why we use acids or bases to help chemical reactions take place. You should think about…

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A: Given: Mass of oxalic acid = 10 mg Volume of oxalic acid = 250 mL Volume of NaOH solution = 12.2 mL…

Q: 4. For the following reaction N₂ (g) + O₂(g) 2 NO (9) a. If the initial concentrations of N₂ is…

A: #(a): The initial concentration values are: [N2] = 0.100 M [O2] = 0.500 M [NO] = 0.0150 M

Q: Can H3O+ act as an acid?

A: we have to determine if H3O+ can act as an acid