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State the structure of a different product that could have been formed if you utilized ethanol containing substantial amount of water instead of the absolute ethanol utilized in the reaction of bromotriphenylmethane with ethanol?
Calculate the mass of urea that should be dissolved in 187 g of water at 35C to produce a solution with vapor pressure of 37.7 mmHg
A saturated solution of Na2SO4 with excess of the solid is present in equilibrium with its vapor in a closed vessel. Calculate the number of degrees of freedom, f, of the system.
Calculate the mass of ice at -15°C that must be added to cool the water to 10°C after thermal equilibrium is achieved. To find the mass of water use the density of water = 1.0 g/mL.
the general guideline for the onset of plastic deformation is a strain of 0.10. what force is required to induce such a
A solution of butanoic acid is prepared from 0.067 mol of butanoic acid in sufficient water to give 1.0 L of solution and has a pH of 2.72. Determine the Ka for the butanoic acid solution
54g of a certain metal at 98 degree Celsius was placed into 80ml of water at 297K. Assuming no heat is lost to the surrounding, what is the temperature of the water and the metal
for the neutralization reaction involving HCl and Mg(OH)2, how many liters of 0.60 M HCl are needed to react with 45 g of a 2.5 M Mg(OH)2 solution? (density= 1.3 g/mL)
As a bromine molecule approaches perpendicular to the negatively charged pi cloud of the carbon-carbon double bond, its bonding electrons are repelled away from the bromine atom nearer the double bond
A 28.5 g sample of an unknown metal is heated to 95.0C and then dropped into 58.0 g of water in a coffee-cup calorimeter. The temperature of the water rises from 23.5 C to 27.1C.
Three common hydrocarbons that contain four carbons are listed here, along with their standard enthalpies of formation: C4H6(g) 111.9 kJ/mol. Calculate the molar enthalpy of combustion to CO2(g) and H20(l)
A certain weak base has a Kb of 8.70 × 10-7. What concentration of this base will produce a pH of 10.10
A patient needs 2.70×10^-2 of a sulfa drug. There are 8.00 tablets in stock. How many tablets should be given?
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