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4.00 mL of potassium ferricyanide is put into each flask (1-4) . In Flask 2 add 1.00 mL of glucose stock (2.78x10^-3 M), add 2.00 mL into Flask 3, 3.00 mL into Flask 4, and in Flask U add 1.00 mL of glucose stock. Determine glucose concentration in each stock solution.
A 0.160-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.
Assuming that the copper and lead are pure, determine the relative amounts of each kind of BB. A bag contains a mixture of copper and lead BBs
two moles of a gas are compressed isothermally and reversibly at 300 k from an initial volume of 10 dm3 to a final
Which of the following equations represents the proper net ionic equation for the complete neutralization reaction between the weak acid HClO2 (aq) and the strong base KOH (aq)
Problem- A compound contains 80.78% C, 13.56% H, 5.66% O. A solution of 1.00g of this compound in 8.5g of benzene freezes at 3.37°C. 1) What are the molecular formula and the molar mass of the compound. (The normal freezing point of pure benzene is ..
Molecular Formula of a Compound from Percent Composition and Molar Mass, What is the molecular formula of a compund that contains 42.87%carbon, 3.598% hydrogen, 25.00% nitrogen
Two separate flasks are each filled with a gas at 25.0°C; the valve between them is opened and the gases are allowed to mix. What would be the mole fraction of NO after mixing, if initially NO is in the first flask (Volume = 1.000 L) at 275.3 torr..
Describe epidemiological or preventive public health measures for tuberculosis
Determine each of the following for a 0.500 M HBr solution. 1) Express your answer using three significant figures [H3O+]= M 2) Express your answer using three decimal places pH= 3)the balanced equation when reacted with LiOH.
A 12-gram mixture of methane, CH4, and ethane, C2H6, is completely combusted in oxygen. If the total mass of H2O produced is 22.0 grams, what was the approximate mass of the methane in the original mixture?
Describe what is happening in this process. B)After removel of ammonium chloride, you now are left with a mixture of the metal, sand, and sodium chloride
A gaseous mixture of O2 and N2 contains 39.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 585mmHg
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