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At a certain temperature 15.0 moles of nitrogen gas and7.00 moles of hydrogen gas are placed in a 20.0 L glass vessel.When equilibrium is reached, 3.00 moles of ammonia gas arefound
a) Calculate the equilibrium constant according to the following equation 2NH3 (g) ----> N2 (g) + 3 H2(g)
the equilibrium mixture is compressed at constant temperature to a volume of 6.21 L? [NH3] = [H2S]=
An experiment requires 15.0 g of cyclohexane, whose density at 25 c is 0.7781 g/ml. what volume of cyclohexane should be used
What is the freezing point of a 28.6% (by mass) aqueous solution of HCl? Assume the HCl is 100% ionized.
-13 degrees C air pressure in an auto tire is 1.5 atm. if the volume does not change, what is the pressure after the tire has warmed to 15 degrees C?
1.list all the strong aqueous acids. what is the difference between a strong acid and a weak acid? how do the
How do you calculate the pH when 0.2 moles of NaOH have been added to 1 mole of acetic acid during a titration. The pKa of acetic acid is 4.76.
What is the pH of a solution prepared by dissolving 0.250 mol of NH3 in sufficient water to make 1.00 L of solution (Kb NH3 = 1.8 x 10-5)
consider another expandable balloon is filled with nitrogen gas. the density of the gas is 1.24 gl and the outside
A NaOH solution that is 18.1M, has a density of 1.250 g/ml. What is the molality? Mass Percent? and Mole Fraction?
The equation for the combustion of gaseous methanol is: 2CH3OH(g) + 3O2(g) ? 2CO2(g) + 4H2O(g) Estimate the ?H°rxn per mole of methanol combusted, using the bond energy data provided below
If the average speed of an oxygen molecule is 4.05multiplied by 104 cm/s at 25°C, what is the average speed of a CO2 molecule at the same temperature?
A can of Mountain Dew soda contains 46 g of sugar. Assuming that your body completely digests this sugar, 170 kcal of heat energy is available from the sugar. Approximately how many grams of water will you have to evaporate as sweat to lose this 1..
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