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Homologous recombination is initiated Homologous recombination is initiated
0.100 moles of NaOH are combined with 0.125 moles acetic acid. The mixture is taken to a final volume of 100.0 ml. What is the expected pH of the solution. Ka = 1.76 x 10^-5
What are the alkene products of 2-bromo-3-phenylbutane treated with sodium methoxide
How many Protons, Neutrons, and Electron of 63Li+. What are the mass number and atomic number of each of these atoms
Given the information below, calculate the heat provided by combustion of 66.1g of propane (C3H8). ?Hf° (C3H8(g)) = -103.85 kJ ?Hf° (CO2(g)) = -393.5 kJ ?Hf° (H2O(?)) = -285.8 kJ Can Som
The literature Ksp value for Mg(OH)2 is 1.810?11. (a) Calculate the theoretical [OH-] in a saturated solution of Mg(OH)2.(b) What volume of 0.00209 M HCl would be required to neutralize the OH- in 1
A. 4.00×10?3 HBr are dissolved in water to make 14.0L of solution. What is the concentration of hydroxide ions,OH^-, in this solution? B. 2.00g of NaOH are dissolved in water to make 2.00L of
Determine the vapour pressure of a solution at 55C that contains 34.2 g NaCl in 375 ml of water. The vapour pressure of pure water at 55C is 118.1 torr. Assume a solution density of 1.00 g/ml.
Write a reaction mechanism for the chlorination of 1-butene by Cl2. Use curved arrows to show electron movement. Show structures of key reaction intermediates and products and indicate the stereoche
2-iodo-4-methylpentane was refluxed for an hour in the presence of sodium isopropoxide. Name and draw the product(s) of this reaction clearly showing the stereoselectivity and regioselectivity of th
Small quantities of oxygen can be prepared in the laboratory by heaing potassium chlorate, KClO3(s). The equation for the reaction is 2KClO3 arrow 2KCl+3O2 Calculate how many grams of O2(g) can be p
Calculate a rough value of the concentration of OH- ion, [OH-], in the saturated solution.The approximate value of the Ksp for calcium hydroxide is 6.510?6
When Heated, KClO3 decomposes into KCl and O2. 2KClO3 arrow 2KCl+3O2 If this reaction produced 25.8 g of KCl, how much O2 was produced (in grams)
How many moles of NaOH must be added to 0.550 L of 0.191 mol/L HC3H5O2(aq) to obtain a solution with pH=4.7. Assume the temperature is 25oC. (For HC3H5O2, pKa=4.89 at 25oC).
Draw the structural formula of 3,4-diethyl-3-hexene. If more than one isomer of this compound exists, then both isomers must be drawn
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5.
Determine the following characteristics of the titration curve for 25.0 mL of 0.400 M NH3(aq) titrated with 0.335 M HI(aq). (For NH3, Kb = 1.8x10-5.) Enter scientific notation as 1.23E4.
The arrangement of the orbitals is the same in a multielectron atom and a single-electron atom. In the Li atom, the 3s, 3p, and 3d orbitals have different energies. The He atom has one electron each
Iodine is prepared both in the laboratory and commercially by adding Cl2(g) to an aqueous solution containing sodium iodide: 2NaI(aq) +Cl2(g) arrow I2(s) +2NaCl(aq) How grams of iodide, NaI, must be
The combustion of propane may be described by the chemical equation. C3H8(g) + 5O2(g) arrow 3CO2(g) +4H2O(g) How many grams of O2(g) are needed to completely burn 95.5 g of C3H8(g)
what is the maximum wavelength of light that can be used to exhibit the photoelectric effect with lithium metal? it requires 279.7 kJ to remove one mole of electrons from Li atoms
In a 1cm cuvette, you measure a sample with an absorptivity constant of 10 L/mol•cm. The absorbance of the sample is 0.5. What is the concentration of the sample in moles/L
Carbon dioxide makes up approximately 0.04% of Earth's atmosphere. If you collect a 2.4 sample from the atmosphere at sea level (1.00 ) on a warm day (28), how many molecules CO2 are in your sample
Draw the structure(s) of all of the alkene isomers, C5H10, that contain a branched chain. Specify E/Z isomerism in your drawings when appropriate.
Calculate the [SCN-] solution A, where 5.7 mL of 2.910?3 M NaSCN is diluted to 44.0 mL with 0.1 M Fe(NO3)3. Next calculate the [FeSCN2+] in the solutions prepared by diluting volumes of solution A w