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A cylinder of compressed nitrogen gas contains 867 g N2. If the volume of the cylinder is 22.5 L, what is the pressure of the N2 if the gas temperature is 298K?
How many milliliters of 8.50×10-2 M;{rm NaOH} are required to titrate each of the following solutions to the equivalence point?
A syringe initially holds a sample of gas with a volume of 285 mL at 355 K and 1.88 atm. To what temperature must the gas in the syringe be heated/cooled in order to have a volume of 435 mL at 2.50
To what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
Helium gas at 25 oC filled a balloon to a volume of 2.25 L. What would the volume of this balloon be when cooled (at constant pressure) to liquid-nitrogen temperature (-196 oC)?
What temperature must a balloon, initially at 25 C and 2.00 L, be heated in order to have a volume of 6.00 L?
Calcium fluoride, CaF2, is a source of fluorine and is used to fluoridate drinking water. Calculate its molar mass to four significant figures.
Calculate the density of sulfur hexafluoride gas at 434 torr and 37°C.
Assuming that the coal was 83.8 % carbon by mass and that combustion was complete, calculate the number of tons of carbon dioxide produced by the plant during the year.
What is molarity of NaOH solution if 26.0ml of 0.380 M H2So4 solution is required to neutralize a 25.0ml sample of the NaOH solution?
A catylst decreases the activation energy of a given reaction by exactly 15 KJ/mol. By what factor does the reaction rate increase at 25 degrees celcius when the catalyst is used? Assume that the Ar
Using the reduction potentials above, what is the voltage for the following electrochemical cell?
How many moles of ozone would there be in the air above Los Angeles County (area about 4000 square miles; consider a height of 10m above the ground) if ozone was at this concentration?
What is the final temperature in a squeezed cold pack that contains 41.0 g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18J/g*C for the solution, an initial temperature of 26
In the first 12.0 of the reaction, 1.8×10-2 of is produced in a reaction vessel with a volume of 0.260 . What is the average rate of the reaction over this time interval?
Determine the mass of CaBr2 you would need to make 500 mL of a 1.2M solution.
The final number of moles (n_2) is 2.00 rm mol. Use the simulation to find the volume (V_1) of 1.00 rm mol of helium at 273 rm K and calculate the final volume (V_2).
What is the boiling point elevation when 43.5 g of the dye magenta is dissolved in 1650 g of ethanol? Kb for ethanol is 1.20 Cdegrees/m
The sledge moves a distance of 19.8 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.500. (a) What is the tension in the rope?
A 20 mL sample of 0.150 M KOH is titrated with 0.125 M HClO4 solution. Calculate the pH after 23.5 mL, 24 mL, 26.5 mL, and 30 mL of acid have been added.
A 400g lemming (does anyone remember that old computer game?) waddles horizontally off a small 4.9m high cliff with a speed of 0.5ms-1.How far from the base of the cliff will the lemming land? What
Consider the dissociation of the tricrotic acid, H3Y. Use the values of K(a1), K(a2), K(a3), and K(w) to evaluate the equilibrium constants associated with each of the reactions shown below:
Consider the following equation: CO + 2 H2 → CH3OH ?H rxn = -128 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 8.08 g H2.
A 1300kg car travels north along Murdoch Drive at 65km/h. The car collides and becomes stuck to a 5000kg truck travelling west at along South Street at the intersection of South Street and Murdoch D
During ascent the temperature of the gas falls from 22°C to -21°C. Calculate the volume of the balloon at its final altitude.