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A sample of hydrogen gas (H2) has a volume of 5.0 L and a pressure of 1.0 atm. What is the new pressure, in atmospheres, if its volume decreases to 2.0 L with no change in temperature or amount of gas?
The concentration of HCl in a bottle was determined as follows: •3.00 mL of the acid were diluted to 250.00 mL •102.40 mL of the diluted acid were titrated with 0.08212-M NaOH
A student then measures 10.00 mL of an unknown solution of Fe2+ into an Erlenmeyer flask and dilutes with 90 mL of 1.0 M hydrochloric acid. He then titrates this sample with the soultion prepared above. If 38.40 mL of the potassium dichromate solu..
When 0.450kJ of heat is added to the gas, it expands and does 219J of work on the surroundings. What is the value of \Delta H for this process? Answer in units of kJ
Assume you have a solution containing two volatile liquids. Given the data for liquid A: MM = 56.89 g/mole, partial pressure = 0.903 atm and for liquid B: MM = 14.52 g/mole, partial pressure = 0.995 atm
determine the partial pressure and the total pressure in a 2.50 L vessel containing the following mixture of gases at 17.8 degrees celsius
Q 3: The salt NaBrO(3) oxides Sn^2+ to SnCl(6)^2- in the presence of hydrochloric acid according to the equation
You may decide to focus on a subset, rather than on all the aspects, in the plan. If possible, include several Exhibits at the end, as in the case of Calkins article.
During mixing, heat is lost to the surroundings at a rate of 30 kJ s-1. What is the temperature of the warm water stream? Assume the specific heat of the water constant at 4.18 kJ kg-1 K-1.
Perchloric acid with an aqueos solution of ammonia and nitrous acid with lithium hydroxide
There is a peak in the middle of the graph with 0.40 for absorbance and 525 for wavelength. What is the wavelength of maximum absorbance?
How much work (in {\rm J}) is required to expand the volume of a pump from 0.0 {\rm L} to 2.6 L against an external pressure of 1.2 atm
The following photo shows copper balls, immersed in water, floating on top of mercury. What are the liquids and solids in this photo? Which substance is most dense? Which is least dense?
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