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Problem- 25.00 mL of a H2SO4 solution with an unknown concentration was titrated to a phenolphthalein endpoint with 48.35 mL of a 0.1303 M NaOH solution. What is the concentration of the H2SO4 solution?
I want you to explain the chemistry in to find what is the concentration of the H2SO4 solution?
The density of a gas is 3.48 g/L at STP. What is its molecular weight. Select one: a. 44.6 g/mol b. 147 g/mol c. 32.0 g/mol d. 224 g/mol e. 78.0 g/mol
electrons can be used to probe the arrangement of atoms on a solid surface if the wavelength of the electrons is
how much oxygen is required to support the aerobic biodegradation of the bod5 material in a storm water sewage
What is the pH of a solution that is 0.30 M in aniline, C6H5NH2, and 0.15 M in anilinium chloride, C6H5NH3+Cl-? (Kb = 4.2 × 10-10 for aniline) Aniline ionizes as: C6H5NH2 + H2O C6H5NH3+ + OH-
What is the percent purity of the calcium hydroxide if the titration requires 7.81 mL of the acid to reach the endpoint?
If it took 14.4 ml of KMnO4 to titrate a solution that contained .6504 g of KMnO4 and 1.0012 g of an iron containing unknown substance What is the molarity of the KMnO4, moles of MnO4- and Fe2+ and the mass of the Fe2+
what conclusions can be reached about the relative strengths of Ni2+(aq) and/vs Cu2+(aq) as oxidizers? Also include the net ionic equations.
one of the most common causes of inaccurate melting points is too rapid heating of the melting point bath. under these
if 47.2 g of n2o4 is introduced into an empty 1.84 l container what are the partial pressures of no2 and n2o4 after
Being that the active ingredient is Mg(OH)2, which decomposed to form Mg2+ and OH- ions. What are the two ways to increase solubility of Mg(OH)2 either before you take it or when it gets in the stomach
the concentration of NO in teh vessel is 0.161 M. At equilibrium the vessel contains N2, H2O, and H2. What is the value of the equilibrium constant Kc for the following reaction? 2H2 (g) + 2NO(g) 2H2O (g) +N2 (g)
consider these changes.a hg l ---gt hggb 3o2g ---gt 2o3gc cuso4 x 5h2os ---gt cuso4s 5h2od h2g f2g ---gt 2hfgat
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