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If a sample of helium is collected by displacing 182 MLK of water. The pressure of the gas as well as the atmosphere is equalized, utilizing the method described in this experiment. The atmospheric pressure is 738 mmHg. The temperature of the water as well as that of the gas is identical at 26 Celsius. Explain how many moles of helium have been evolved?
Cd2+, Co2+ is saturated with H2S at a pH of 3.00. Which metals form a sulfide solid? [H2S]sat=0.10 and Ka1= 1.3e-7 and Ka2=8.5e-14
When 33.5 mL of 0.585 M H2SO4 is added to 33.5 mL of 1.17 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate pH of this reaction.
Where n is the quantum number with possible values of 1, 2.... as well as v is the frequency of vibration. The vibration frequency of HCL is approximately 8.85 *1013s-1. Explain what minimum energy is required to excite a vibration in HCL
1.00g sample of water is allowed to vaporize completely in a 10.0l container. what is the pressure of the water vapor
Carbon dioxide, which is recognized as the major contributor to global warming as a greenhouse gas, is formed when fossil fuels are combusted, as in electrical power plants fueled by coal, oil, or natural gas
Calculate the pressure difference between CH4 and an ideal gas under these conditions. The van der Waals constants for CH 4 are a=2.300L2⋅atm/mol2 and b=0.0430 L/mol.
a explain the general idea of the lcao-mo method.b what is the minimal set of functions necessary to describe water in
If you had a high-energy xenon particle beam and wanted to make gold, what element would you bombard
A molecular compound is dissolved in water at 25 C such that its mole fraction ,X, is 0.225. what is the vapor pressure of the resulting solution if the vapor pressure of pure water is 23.8 torr at 25 C
Automobile airbags contain solid sodium azide, NaN3, that reacts to produce nitrogen gas when heated, thus inflating the bag. Calculate the value of w (work) for the following system if 13.9 g of NaN3 reacts completely at 1.00 atm and 22 °C.
How many grams of hydrogen chloride can be produced from 350 grams of sodium chloride and 290 grams of hyroden sulfate if the reaction has a yield of 88%?
A certain sunstance, intially present at 0.0800 M, decomposes by zero-order kinetic with a rate constant of 2.50 x 10-2 mol/l s. Calculate the time (in seconds) required for the system to reach a concentration of 0.0630
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