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a 100.-L flask contains a mixture of methane, CH4, and argon at 25°C. The mass of argon present is 228 g and the mole fraction of methane in the mixture is 0.650. calculate the total kinetic energy of the gaseous mixture.
If 6.0 moles of ethene and 6.0 moles of hydrogen are introduced into a 2.0 L sealed vessel and allowed to equilibrate at 200ºC, what is the equilibrium concentration of the ethene
Consider a piece of gold jewelry that weighs 9.78 g and has a volume of 0.680 cm3. The jewelry contains only gold and silver, which have densities of 19.3 g/cm3 and 10.5 g/cm3, respectively.
Calculate the ratio of dihydrogen phosphate to hydrogen phosphate in the blood at pH 7.4. The Ka = 6.3 x 10 -8 5. For a weak acid with a pKa of 6.0 calculate the ratio of conjugate base to acid at a pH of 5.0.
Calculate the ratio of HCL molecules in the first excited rotational state to those in the ground state @ 25 C. Assume an equilibrium bond distance of 1.275 angstroms.
a battery has a volume of 1.78l and contains 3.28x10^3 grams of sulfuric acid, what is the density of sulfuric acid in g/ml?
draw the organic product you would expect to obtain from reaction of the following model triglyceride
What is the theoretical yield of aluminum oxide if 1.60 mol of aluminum metal is exposed to 1.50 mol of oxygen?
calculate the percentage of empty space in 1 mole of water at 25 c. obbtain the density from the experiment" some measurements of mass and volume."
Calculate the partial pressure of each gas and the total pressure after the valve between the flasks is opened. P(He) in mmHg P(Ar) in mm Hg Ptotal in mm Hg
Assuming the heat absorbed by the styrofoam is negligible, calculate the expected final temperature. The specific heat of water is 4.184 J g-1 K-1.
Car air bags operate by the explosive reaction of NaN3: 2NaN ( ) 2Na( ) 3N ( ) 3 2 s s + g
The vapor pressure of chlorine dioxide (ClO2 ) is 155 Torr at -22.75 ? C and 485 Torr at 0 ? C. What is the normal boiling point of chlorine dioxide?
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