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In the structure of phosphoric acid, why is it relatively easy to remove the first proton, considerably harder to remove the second proton, and extremely difficult to remove the third proton?
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For the molecule allene, H2 C = C = CH2, give the hybridization of each carbon atom. Will the hydrogen atoms be in the same plane or perpendicular planes?
When benzene (C6H6 ) reacts with bromine (Br2 ), bromobenzene (C6H5Br ) is obtained: C6H6+Br2→C6H5Br+HBr What is the theoretical yield of bromobenzene in this reaction when 28.0 g of benzene reacts with 60.7 g of bromine ...
Assessment Task You have been tasked to prepare a report for potential investors that allows them to understand the potential social, ethical and legal opportunities and risks of a technology, selected from a list of top ...
A chemist adds 75.0 mL of a 1.92 M nickel(II) chloride (NiCl2) solution to a reaction flask. Calculate the millimoles of nickel(II) chloride the chemist has added to the flask. Round your answer to 3 significant digits.
A hydrogen atom emits a photon as its electron changes from n = 5 to n = 2. For the H atom, E n = -2.18E-18*(1/n 2 ) J. What is the wavelength (in m) of the photon? ( ) m The number of significant digits is set to 3; t ...
H 2 (g) + I 2 (g) = 2HI Temperature = 731 K If 1.60 mol H 2 and 4.20 mol I 2 areplaced in a 1.08 L vessel What is the equilibrium concentration of H 2 in the gaseous mixture? The equilibrium constant is K = 49.7
2K3PO4(aq)+3MgCl2(aq) → Mg3(PO4)2(s)+6KCl(aq) The molecular equation you determined in Part B is shown above for your convenience. Examine each of the chemical species involved to determine the ions that would be present ...
Insoluble PbBr2(s) precipitates when solutions of Pb(NO3)2(aq) and NaBr(aq) are mixed. Pb(NO3)2(aq) + 2NaBr(aq) ---> PbBr2(s) + 2NaNO3(aq) ΔrH = ? To measure the enthalpy change, 350. mL of 0.50 M Pb(NO3)2(aq) and 350. ...
To standardize a solution of NaOH, one uses a primary standard called potassium hydrogen phthalate (KHP for short). It is a monoprotic acid that can be obtained extremely pure and dried to a constant weigh out 0.556g of ...
Interpretation of Reactions by Ionic Type Equations. Aqueous solutions of the following substances or their mixtures with water if they are only slightly soluble, are mixed. Write first the conventional equation , secon ...
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