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A technician for the Ethanol-in-Octane fuel company was testing a mixture of ethanol and octane as a synthetic fuel. Combustion of a sample of this mixture of ethanol and octane (in the presence of excess oxygen) produced 208.09 g of water and 439.34 g of carbon dioxide. Determine the mass percent ethanol in the sample used for the analysis. (The technician forgot to record the mass of the sample used in the analysis. Because he knows the mass of water produced and the mass of CO2 produced he does not need the mass of the sample.) The balanced equations for the combustion of ethanol and octane are shown below.ethanol: 1 C2H5OH + 3 O2 -> 2 CO2 + 3 H2Ooctane: 2 C8H18 + 25 O2 -> 16 CO2 + 18 H2OC2H5OH molar mass 46.07; C8H18 molar mass 114.22H2O molar mass 18.02; CO2 molar mass 44.01
A 119.6ml sample of 0.110M methylamine (CH3NH2) is titrated with 0.255 M HNO3 . Calculate the pH after the addition of each of the following volumes of acid.
Illustrate with a net ionic equation for each of the following how the pH would increase, decrease, or stay the same with the indicated changes: (b) Adding ammonium nitrate to a solution of ammonium hydroxide
Using the Arrhenius concept of acids and bases, identify the Arrhenius acid and base in each of the following reactions
What does the angular momentum quantum number determine? Check all that apply. A.) the overall size of an orbital B.) the energy of the electron on the outer shell C.) the possible number of electrons on particular orbital D.) the energy of an orb..
Ionization involves completely removing an electron from an atom. What wavelength of light contains enough energy in a single photon to ionize a hydrogen atom
Carbonyl fluoride, COF2, is an important intermediate used in the production of fluorine-containing compounds. For instance, it is used to make the refrigerant carbon tetrafluoride, CF4 via the reaction
In this experiment we used ortho-vanillin and p-toluidine to form the imine. Why does the reaction mixture turn into a liquid when the ortho-vanillin and p-toluidine are initially mixed? What is the name or melting point of the product?
Calculate the pH of 9.2E-8 M NaOH, ignoring activity coefficients. Report the pH using the correct number of decimal places.
Derive Eh-pH equations based on the progressive oxidation of Mn to form oxides starting with metallic Mn. b) Plot these equations in coordinates of Eh and pH
Determine what given process is occurring when the color appears in the flame and an electron emits energy and it makes a transition to a higher energy orbital.
liquid benzene and liquid n-hexane are blended to form a stream flowing at a rate of 700 lbmhr. the blended stream has
What is the [H3O+] and the pH of a buffer that consists of 0.21 M HNO2 and 0.57 M KNO2? (Ka of HNO2 = 7.1*10^-4) Define What is the component concentraion ratio
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