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What is the temperature of a gas if 5.0 moles of the gas occupy a 10 liter container at a pressure of 2.5 atm? Calculate the molar concentration of each ion (Na+ and PO4 3-) in a aqueous Na3PO4 solution when 2.0 g of Na3PO4 is dissolved in water so that the final volume of the solution is 150 ml.
The equilibrium constant KC for the reaction 2H2(g) + CO(g) ? CH3OH(g) is 135 at a certain temperature. If there are 5.23 ? 10?2 moles of H2 and 3.73 ? 10?
What type of signal(s) would you observe in the mass and/or infrared spectrum of the following compound? c6h12cho A) A signal at 1600 cm-1
Which of the following would be expected to have the highest pH?
The enthalpy of combustion of benzoic acid is commonly used as the standard for calibrating constant-volume bomb calorimeters; its value has been accurately determined to be 3226.7kJ/mol.
A 10.0 balloon contains gas at a pressure of 640 torr. What is the new pressure of the gas at the 22.0 liters volumes if there is no change in temperature.
Consider the following reversible reaction. In a 1-liter container the following amounts are found in euilibrium at 400 deg C., 0.0536 mole N2, 0.599 mole H2, and 0.0437 mole NH3. Evaluate Kc = N2(g) + 3 H2(g)-> 2 NH3(g) answer in significant figu..
What is the concentration of the HNO3 solution? Your response differs from the correct answer by more than 10%. Double check your calculations. M (b) How many moles of NaOH were in excess after the first addition?
You have a sample of helium gas at 0.00 ?C. To what temperature should the gas be heated in order to increase the root-mean-square speed of helium atoms by 10.0%
how would you make a 50.0 mm mops buffer pka7.15 at ph7.00 using a 500 mm sol of mops acid and a 1.00 m sol of naoh?
Suppose that coal of density 1.5 g/cm3 is pure carbon. (It is, in fact, much more complicated, but this is a reasonable first approximation.)
If 3.00 moles of ZnS are combined with 4.00 moles of O2, how many moles of ZnO can be produced?
A 10.0 ml sample of aqueous HCl requires 18.66 ml of 0.206M NaOH to reach the endpoint . What is the molar concentration of HCl ? The chemical equation of the reaction is
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