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A 25.00-mL sample of H2SO4(aq) requires 22.65 mL of the 0.5510 M NaOH for its titration. Assuming that sulfuric acid behaves as a strong acid with respect to both ionizable hydrogen atoms, what was the concentration of the sulfuric acid (H2SO4)?
specific brand of gourmet chocolate candy contains 7.00 rm g of dietary fat in each 22.7-rm g piece. How many kilograms of dietary fat are in a box containing 4.00 lb of candy?
Show that the proton condition for a NH4Cl solution is a linear combination of the mass balance equations and the charge balance equation.
How many grams of sodium nitrite should be added to 300. mL of 0.0680 M of nitrous acid to produce a buffer solution with a pH of 3.30
Question- 1) Calculate the wavelength of a photon, in m, needed to excite a hydrogen atom from the ground state to the n= 5 state 2) Calculate the frequency in 1/s of a photon with wavelength 733 nm.
also why are the energy minimization bond angles not the same as the ideal bond angles?
A sample of iron was heated to 125.0 degrees Celsius, then placed into 375 g of water at 19.8 degrees Celsius. The temperature of the water rose to 25.6 degrees Celsius. How many grams of iron were in the sample?
A water sample was found to contain [Ca2+]=35 mg/L and [Mg2+]=20 mg/L. Determine the water hardness in terms of mg/L CaCO3.and state whether it has low, medium or high hardness.
Wood and oxygen are two reagents required to keep a campfire burning. identify the limiting and excess reagent: a) The fire dwindles over time. b) A carbon dioxide fire extinguisher puts out the flame.
How many grams of urea (NH2)2CO must be added to 351 grams of water to give a solution with a vapor pressure of 2.73mmHg less than that of pure water 3 degrees celsius The vapor pressure of water at 30 degrees celsius is 31.8 mmHg
Standard reduction potentials for the Pb2+/Pb and Cd2+/Cd haf-reactinos are -.13V and -.40C, respectively. At what relative concentrations of Pb2+ and Cd2+ will these half-reactions have the same reduction potential?
How many moles of Cl2 can be produced from the given mass of HCl. c. Which reactant is the limiting reactant? d. What is the maximum amount of Cl2 that can be produced by this reaction e. Calculate the amount of excess reactant.
for organic mechanismshow can you tell if something is a strong nucleophile a strong base or both?for example what
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