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Solid barium nitrate is slowly added to 175mL of a 0.0414 M ammonium carbonate solution. Explain what is the concentration of barium ion necessary to just initiate precipitation is?
Calculate the number of fungal particles present in 1 m3 in the original air sample and express your answer in scientific notation, to one significant figure.
Calculate the absolute entropy of Cl2(g) at 298k...include the limits of integration. entropy for Cl2= 222.96j/mol.
A solution is prepared by dissolving calcium chloride in water and diluting to 500.0 mL. If this solution contains 44 ppm chloride ions, the concentration of calcium ions is how many ppm
an insulated container holds 475g of molten indium (liquid) at a temperature of 276 C. if 511g of solid indium are warmed to the melting point (157 C) and than dropped into molten indium, the system comes to thermal equilibrium at the temperature ..
A 0.140-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium? Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.
Presume you have 100 mg of a sample dissolved in 0.6mL of water. The partition coefficient for the compound in water and ether is 4.0. Compute how much total compound you would obtain with 3x0.2mL extractions with ether.
The alcohol content of hard liquor is normally given in terms of the "proof," which is defined as twice the percentage by volume of ethanol (C2H5OH) present. Calculate the number of grams of alcohol present in 1.00 L of 57 proof gin.
First of the reactant is 2-methyl-2-butanol and the products are 2-methyl-1-butene and 2-methyl-2-butene. I started out with exactly 1.2g 2-methyl-2-butanol and my final product was 0.09 g.
Measurements also show that a certain sample of the unknown compound contains 9.8 mol of oxygen and 3.31 mol of chromium.
Copper has two naturally occurring isotopes. Cu-63 has a mass of 62.939 amu and relative abundance of 69.17%. Use the atomic weight of copper to determine the mass of the other copper isotope. Express your answer using four significant figures
The feed to reactor contains only C 2 H 4 and HBr. if the molar flow rate = 165mol/s, compute the fractional conversion of the limiting reactant?
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 7.00 nm in diameter? Take the m..
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