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a solution contains an unknown mass of dissolved silver ions. when potassium chloride is add to the solution.,a white precipitate forms.The precipitate is filtered and dride and then found to have a mass of 244 mg.What mass of silver was in the orginal solution?(assume that all silver was precipitated out of solution)
what is the charge of the carboxyl group in an amino acid at physiological pH. Please explain the charge. Also what is the charge above and below physiological pH
Calculate the overall relative standard deviation, the relative standard deviation of the method, and the relative standard deviation of the sampling process.
What is the volume of 0.2 kmol of ideal carbon monoxide in en equilibrium state where the gas density
A hydrate of calcium chloride contains 49.3% water and has a formula weight of 219 g/mol. Calculate the molecular formula of the hydrate.
The decomposition of hydrogen peroxide is first order in H2O2. 2H2O2 -----> 2H2O + O2 The rate constant for this reaction at 20 C is 1.8 * 10^-5 s^-1
From the mean bond enthalpy data given below, estimate the enthalpy change for the complete combustion of one mole of butene at 298 K. (The molar enthalpy of vaporization of water is 45.0 kJ mol-1 at 298K)
DRAW skeletal structure of the major organic product formed when bromobenzene encounters solid Mg in an ether solvent.
Calcium and Magnesium carbonates occur together in the mineral dolomite. Suppose you heat a sample of the mineral to obtain the oxides,CaO and MgO, and then treat the oxide sample with HCl.
Intermolecular interactions can be classed as either: strong, moderate, or weak. Give two examples for each class and give approximate values for the magnitude
Why can NH3 function as a ligand with Ni^2+ While NH_4 + cannot function as a ligand with Ni^2+
Which of the following would have a density of 1.21g/L at 7.0*C and 0.978 atm? Please explain why don't just give me the answer.
You pass a road sign saying "New York 115 km." If you drive at a constant speed of 65 mi/h, how long should it take you to reach New York? (Round to the nearest minute.)
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