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A solution that contains 87.2g of an unknown compound in 392.4g of water freezes at -8.00 degrees C. Calculate the molar mass(in units of g/mol) of the solute. Kf of water is 1.86 degrees C/m.A. 1.49E1 g/molB. 7.96E3 g/molC. 5.17E1 g/molD. 2.30E0 g/molE. 1.05E3 g/mol
List the basic solutions in order of increasing basicity. NH2OH, HNO2, C2H5NH2, NaNO2, and Ca(OH)2
Calculate the pH of a buffer solution that is 0.200 M HC2H3O2 and 0.100 M in NaC2H3O2. Calculate the pH of the buffer that reults from mixing
what compounds would you use and how would testing these two compounds contribute in your knowledge of the above mentioned subjects
monoprotic acid, has a pH=2.00. What is the value of the ionization constant, Ka for this acid?
Limestone (CaCO3) is used to remove acidic pollutants from smokestack flue gases. It is heated to form lime (CaO), which reacts with sulfur dioxide to form calcium sulfite
A 530. g piece of copper tubing is heated to 89.5°C and placed in an insulated vessel containing 159 g of water at 22.8°C. Assuming no loss of water and heat capacity for the vessel of 10.0 J/K
Write reaction equations to explain how your acetic acid/sodium acetate buffer reacts with an acid and reacts with a base.
mercury barometer with an inner diameter of 10.00 mm? Recall that the area of a circle is A = ? r2 and that 1 N = 1 kg m/s2.
Suppose HI at 5.00 10^-1 M, H2 at 1.00 x 10^-2 M, and I2 at 5.00 x 10^-3 M are mixed in a 5.0 L container. Calculate all concentrations at equilibruim.
Using oxidation and reduction half-reactions, balance the skeletal equation: N_2H_4(g) + ClO_3 -(aq) --> NO(g) + Cl-(aq) of hydrazine with chlorate ions.
An electron with a mass of 9.11 x 10^-31kg and traveling at a velocity of 3.55 x 10^6 m/s has a wavelength which is measurable. what is the wavelength?
Before investigating the scene, the technician must dilute the luminol solution to a concentration of 2.00×10-2 it M. The diluted solution is then placed in a spray bottle for application on the desired surfaces.
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