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Sulfuric acid has a dual role in the chemistry. What are its two roles in the recovery of copper metal
a column of air with a pressure of 1.57 x 105 Pa and an area of 1.07 m2 and given that the acceleration due to gravity is 9.8 m/s2, what is the mass of the column.
Which way should the equilibrium shift when HCl is added? How do your results support your answer . Which way should the equilibrium shift when Na2EDTA is added? How do your results support your answer?
A 2.30-g sample of a large biomolecule was dissolved in 16.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C.
The equilibrium constant for a reaction at 800K is 14.2. If the enthalpy of the reaction is 30 kj/mole, what would be the equilibruim constant
In a flame test experiment, sodium gives the brightest and most persistent color in the flame. Do you think that potassium could be detected visually in the presence of sodium
The mass of a cube of iron is 338 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
A calorimeter contains 27.0 mL of water at 11.0 C. When 2.10 g of X (a substance with a molar mass of 74.0 g/mol) is added, it dissolves via the reaction X{(s)}+H_2O{(l)} -> X{(aq)}
Would the following structures be polar or nonpolar?
the rate constant for the hydrolysis of lactose to galactose and glucose at 25 degrees C is .21M^-1 s^-1. What is the final concentration of lactose after 3.4 hours if the initial concentration was 2.50M
The reaction 2A + B --> C + D has an activation energy of 80.0 kJ/mol. At 320°C, the rate constant k = 1.80 x 10-2 L mol-1 s-1. What would be the value of k at 450°C?
Which of the following species is present in the greatest concentration in a 0.100 M H2SO4 solution in H2O
AgBr is the light-sensitive compound in most photographic films. Assume, when film is exposed, that the light energy absorbed dissociates the molecule into atoms.
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