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Find ph of the solution at equivalence point
  1- Consider the following curve (Figure 1) for the titration of a weak base with a strong acid and answer each question. Determine the concentrations of HNO 2 and NaNO 2 after addition of 1. …
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Draw the path that light travels through a spectrophotometer
  Diagram the path that light travels through a spectrophotometer. Utilize flow chart format. Comprise white light source, measuring phototube, sample compartment and monochrometer.   …
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State what is the empirical formula of the nitrogen hydride
  A 0.87mg sample of nitrogen reacts with hydrogen to form 1.058mg of the hydride. What is the empirical formula of the nitrogen hydride?   …
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Calculate the binding energy per nucleon for 48ti
  Question - The nuclear mass of 48Ti is 47.9359 amu. Calculate the binding energy per nucleon for 48Ti. Express your answers to three significant figures separated by comma.   …
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Depict every stereoisomer for 2-dimethylcyclopentane
  Draw every stereoisomer for 1,2-difluoro-1,2-dimethylcyclopentane. Use wedge and dash bonds for the substituent groups   …
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Explain dominant at physiological ph and formic acid
  modify the 3 molecules so that they show the form that is dominant at physiological pH: formic acid, acetylsalicylic acid (aspirin), and citric acid   …
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Calculate the energy of a photon
Calculate the energy of a photon of wavelength 11.56 meters. (Planck's constant is 6.626 x 10-34 joule seconds; the speed of light is 2.998 x 108 m/s)   …
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Explain what is the lewis structure and molecular shape
What is the lewis structure and molecular shape around the carbons in CCl2CH2 as predicted by the VSEPR theory?   …
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Calculate the molar mass of menthol
Menthol is a crystalline substance with a peppermint taste and odor. When 1.65 g of menthol is dissolved in 25.0 g of cyclohexane, the freezing point of the solution is lowered by 8.78 °C. The fre …
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Explain what is the minimum pressure in kpa
What is the minimum pressure in kPa that must be applied at 25^degree C to obtain pure water by reverse osmosis from water that is 0.191 M in sodium chloride and 0.083 M in zinc sulfate? Assume comple …
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Balance the reaction for the combustion of heptane
An alkane undergoes combustion when it reacts with oxygen to produce carbon dioxide, water, and energy: alkane+O2→CO2+H2O+energy Balance the reaction for the combustion of heptane: ?C7H16+ …
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Explain the solubility of m(oh)2 in pure water
The generic metal hydroxide M(OH)2 has Ksp = 3.85×10-18. What is the solubility of M(OH)2 in pure water? What is the solubility of M(OH)2 in a 0.202M solution of M(NO3)2?   …
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What is the chemical formula of non-cyclic alkane
If a non-cyclic alkane shows a molecular ion peak at m/z 464, what is the chemical formula?   …
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Draw an alternative lewis structure for ch2br
draw an alternative lewis structure for CH2Br. the structure they gave me already has two nonbonding electrons on Bromine with no formal charge   …
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Explain the heat of combustion for a sample of coal
Explain the heat of combustion for a sample of coal is 23.0kJ/g. Explain what quantity of coal (in grams) must be burned to heat 500.0 g of water from 20.0 degrees C to 95.0 degrees C. The specific he …
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Predict the product if any of reaction between propanoyl
Predict the product, if any, of reaction between propanoyl chloride and the following reagents: (a) Li (Ph)2 Cu in ether (b) LiA1H4, then H3O+ (c) CH3MgBr, then H3O+ (d) H3O+ (e) Cycloh …
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Explain species and molecular structure for p2i4
Problem- Can someone please do lewis structure, geometry, species, and molecular structure for P2I4? I want you to explicate the chemistry in this problem   …
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What is the lewis structure and vsepr type
  What is the Lewis structure, VSEPR type, molecular geometry, and bond angle for each of the following: NaClO2, KICl4, and C4H10.   …
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What percentage of the naphthalene molecules emitted photon
  Problem- A 5.00 mL ampule of a 0.100 M solution of naphtalene in hexane is excited with a flash of light. The napthalene emits 15.5 J at an average of 349nm. What percentage of the naphthale …
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Define reactions as spontaneous or nonspontaneous as written
Based on the sign of E°cell, classify these reactions as spontaneous or nonspontaneous as written. Assume standard conditions. a) Ni2+(aq) + Pb(s) ------------------- Ni(s) + Pb2+(aq) b) Ni2 …
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