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Substance A has a greater molar mass than substance B. Both are nonelectrolytes. if 50 g of substance A are dissolved in 250 g of water in one beaker, and 50 g of substance B are dissolved in 250g of water in another beaker, which solution will have the higher boiling point? Explain why.
petit discovered the empirical rule that the specific heat times the atomic weight of many solid elements is a constant: Using this rule, calculate the specific heat of copper and platinum.
A piece of galena has a volume of 5.4 cm3. If the density of galena is 7.5 g/cm3, what is the mass (in kg) of that piece of galena?
Suppose a vessel contains 6.4 g of NH3, how many grams of O2 are needed for a complete reaction?
solution of an unknown acid has a ph=1.776. What is the value of acid dissociation constant?
Determine the volume of the gas at a pressure of 150.0 kPa and a 26 degree Celsius of temperature?
The Ka for boric acid is 7.3 x 10-10. What is the pKa of boric acid?
Is heat absorbed or evolved in the course of this reaction? Calculate the amount of heat transferred when 45.0 g of CH3OH (g) is decomposed by this reaction at constant pressure.
An acre of corn can produce about 375 gallons of ethanol, using only the kernel of the corn for conversion to ethanol. Assume the energy input to produce an acre of corn is 15000000 kJ.
Metals such as magnesium and zinc react with dilute sulfuric acid to give hydrogen, according to the equation: M (s) + H2SO4 (aq) -------> MSO4 (aq) + H2 (g) When 5.00 g of a mixture of powdered magnesium and zinc were dissolved in diluted sulfuri..
calculate the amount of heat transferred when 46.0 g of {rm{CH}}_3 {rm{OH}}(g) is decomposed by this reaction at constant pressure.
A solution containing 100 g of an unknown liquid and 900 g water has a freezing point of - 3.33 oC. What is the molar mass of the liquid? Kf = 1.86oC/m
What amount of energy is required to completely ionize 29.9 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole.
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