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4.60 mol of solid A wasplaces in a sealed 1.00 L container and allowed to decompose into gaseous B and C. The concentration of B steadily increased until it reached 1.10M where it remained constant.
A(s) (equilibrium to ) B (g) + C(g)
Then, the container volume was doubled and equilibrium was re-established. How many moles of A remain?
Initially the stopcocks are closed. One of the flasks contains 2.0 of , the second 3.7 of , and the third, 0.10 of ethanol. The vapor pressure of at 308 is 42 and that of ethanol is 102 . The stopcocks are then opened and the contents mix freely.
Bombardment of boron-10 with a neutron produces a hydrogen-1 atom and another nuclide. What is this nuclide
95 grams of sodium acetate is dissolved in enough water to make 75 mL of solution. Calculate the pH of the resting solution
The solubility of N2 in blood can be a serious problem (the "bends") for divers breathing compressed air (78% N2 by volume) at depths greater than 50 ft. Find the volume (in mL) of N2, measured at 25degrees celsius and 1.00 atm, released per liter..
A piece of charcoal from a tree killed by the volcanic eruption that formed the crater in Crater Lake (in Oregon) gave 7.0 disintegrations of carbon-14 nuclei per minute per gram of total carbon.
why does a salt containing a cation from a weak base and an anion from a strong acid form an acidic solution
How many mL of a 2.0 M solution of NaOH would bve needed in order to have 0.500 mol of NaOH? (Molar mass of NaOH is 40.0 g/mol)
calculate the concentration of an NaOH solution if 25.0ml of the solution is needed to neutralize 17.5ml of a 0.419M HCL solution
If 17.0 mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentration of the ammonia?
What proportion of I2 molecules are in the ground and the first two excited levels at the two temperatures. Calculate the vibrational contribution to the molar entropy of I2 at the two temperatures
You have a choice of a p-20 ,p-100,p-200,p-1000,a 1mL serological pipette , and a 5mL serological pipette. Which one(s) would you choose to make this standard and why? Explain how you would calibrate the pipette(s) you choose.
The combustion of 135mg of a hydrocarbon produces 440mg of CO2 and 135mg of of H2O. The molar mass of the hydrocarbon is 270 g/mol. Determine the molecular formula of this compound ?
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