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How many grams of NH4Cl must be added to 424 mL of a 0.69 M solution of NH3 to prepare a pH = 9.00 buffer?
Calculate the binding energy of the 2s electron in iron and calculate the binding energy of the 2s electron in iron. Does the new energy agree better with experiment?
An odorous gas emitted by a hot spring was found to diffuse 2.92 times slower than helium. What is the molar mass of the emitted gas.
66.0 mL of a 1.60 M solution is diluted to a volume of 288 mL. A 144-mL portion of that solution is diluted using 163 mL of water. What is the final concentration.
How much heat is required to heat 10.0g of ice at -5.00 degree Celsius to become water vapor at 107.00 degree Celsius.
Consider 20.0 moles of CO2 in a 1.0 liter container at 300.0 K. What is the pressure predicted by the van der Waals equation.
What is the boiling point of a 0.800 molal solution of sugar in water? Kb = 0.512C/m for water. Sugar does not dissociate in solution and pure water boils at 100C.
If the water in your house has 1000.0 mg/L of calcium carbonate dissolved in it, How many grams of sodium oxalate could you mix with 100.0 mL of that water before a precipitate would form.
Which of the following molecules have dipole moments? For the molecules that are polar, indicate the polarity of each bond and the direction of the net dipole moment of the molecule.
When a 2.41x102 g strip of zinc is dropped into a large beaker containing excess hydrochloric acid, how many grams of gas are formed.
Determine how many grams of Phosphorus tri-fluoride will be produced when 40.1 g of F2 mix, and the reaction has a 78.1% yield?
At 100 degrees C, the vapor pressure of water, methanol, and ethanol are 760, 2625, and 1694 torr, respectively. Which counpound has the highest normal boiling point.
What is the kinetic energy of this soccer baal? Mass of soccer ball is= 0.38 kg and fits this description out of these four given cations ?
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