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In an alkalinity titration of a 100.0 mL sample of water from a hot spring, 2.56 mL of a 0.0320 M solution of HCl is needed to reach the first equivalence point (pH = 8.3) and another 10.42 mL is needed to reach the second equivalence point (pH = 4.0). If the alkalinity of the spring water is due only to the presence of carbonate and bicarbonate, what are the concentrations of each of them?
(on a side note what does the equivalence points indicate?)
A sheet of gold weighing 8.5 g and at a temperature of 11.0 degrees C is placed flat on a sheet of iron weighing 21.0 g and at a temperature of 56.9 degrees C. What is the final temperature of the combined metals
A battery is a chemical cell in which electrolysis occurs spontaneously. Faraday formed a battery from zinc (Zn) and platinum (Pt) electrodes immersed.
What are the major products of the following bromination electrophilic aromatic substitution reactions? a) phenol with 1 equivalent of Br2 b) anisole with 1 eq. Br2 c) diphenyl ether with 1 eq. Br2 d) acetanilide with 1 eq. Br2 e) 4-bromophenol with ..
Use regression analysis to investigate the relationship between the number of fatal accidents and the percentage of drivers under the age of 21. Discuss your findings.
If the elements symbol are the same for those 36 elements as they are in our universe, what would the noble gases be. 2. Which elements contain first d electron.
Problem-The elemental composition of lactic acid is 40.0% carbon, 6.71% hydrogen and 53.29% oxygen, and has a molecular mass of 90.0 g/mol. What is the molecular formula of lactic acid
Will the recorded temperature change for an exothermic reaction performed in a glass calorimeter be greater or less that that in a styrofoam "coffee cup" calorimeter? Explain. Assume glass to be a better conductor of heat that styrofoam.
Determine the pH of a solution of 10-3 M sodium formate. Formate is a byproduct of microbial metabolism, and can also serve as an energy source for anaerobic bacteria.
Monel metal is a corrosion-resistant copper-nickel alloy used in the electronics industry. A particular alloy with a density of 8.80 g/ cm^3. and containing 0.074 % Si by mass is used to make a rectangular plate that is 15.0 cm long,
The nucleus X in which A= 200 emits alpha particles of kinetic energy 5.000 MeV. Calculate (a) the velocity of the alpha particles in cm/ns, (b) the kinetic energy of the recoil nucleus in MeV, and (c) the Q value of the alpha emission in MeV. Neg..
What is the molality of a solution of aluminum nitrate that contains 31.0 g of Al(NO3)3 dissolved in 295.0 g of water? Use molar masses with at least as many significant figures as the data given. What is the molality of each of the ions in soluti..
Discuss how one could tell the difference between first order, second order and zero order reactions by graphing the reactant concentration in some way vs time.
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