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When measuring the boiling point of a compound, why is the micro boiling point determined at the point when the last bubble has left the bottom of the bell and the liquid begins to rise in the bell
Calculate the concentration of Cu2+ ion in this standard solution if the stock solution was 0.0200 M Cu2+.
A voltaic cell consists of Pb/Pb2+a half-cell and a Cu/Cu2+ half-cell at 25 . The initial concentrations of and are 5.10×10?2 and 1.60 , respectively. What are the concentrations of Pb2+ and Cu2+ when the cell potential falls to 0.360 V?
what is heat of vaporization of a liquid that has a vapor pressure of 606 torr at 84 degrees celsius and a boiling point of 96.3 degrees celsius at 1 atm?
you dissolve 15.0g of sucrose C12H22O11 in a cup of water (225g) what is the freezing point of solution (kf of water is -1.86).
Kp for the reaction of SO2(g) with O2 to produce SO3(g) is 3 × 1024 . Calculate Kc for this equilibrium at 25ºC. (The relevant reaction is 2SO2(g) + O2(g) 2SO3(g).)
butane has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -.4 degrees Celsius. A 250 mL sealed flask contains .75 g of butane at -22 degrees C.
sodium chloride dissolved in 225 g of water has a density of 1.98g/ml. Calculate the mass percentage of sodium chloride
What is the maximum mass of ammonia that can be produced from a mixture of 155.3 g of N2 and 35.98 g of H2? 2. Which element would be left partially unreacted? (enter nitrogen or hydrogen)
magnesium oxide decomposes to form 7.29 of magnesium, what mass of oxygen gas is also released in the reaction?
What is the pH of a solution prepared by dissolving 11 mmol of a weak base in 350 mL of a 0.199-M solution of its conjugate acid
In the hydrogen atom, for which transition is the emission line observed at shorter wavelength, n=4 to n=2 or n=5 to n=1? Show the equation needed to figure this out. Consider the relative size of delta E to determine the relative wavelength.
Salicylic acid, used in the synthesis of aspirin, has mass composition 60.87% C, 4.38% H, and 34.75% O. What is the empirical formula of the compound?
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