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A mixture of oxygen and hydrogen is analyzed by passing it over hot copper oxide and through a drying tube. Hydrogen reduces the cu0 according to the reactionCuo (s) + h2 (g) ----> Cu (s) + H20 (l), and oxygen re oxidizes the copper formed according to Cu (s) + 1/2 o2 (g) -----> Cu0 (s).At 25 degrees Celsius and 750. Torr, 125 cm^3 of the mixture yields 82.5 cm^3 of dry oxygen measured at 25 degrees Celsius and 750. Torr after passage over Cu0 and the drying agent. What is the original composition of the mixture?
How many 2p atomic orbitals from boron must be mixed with a 2s atomic orbital to yield the bonding hybrid atomic orbitals in BF3. WHY
Calculate kinetic energy of a 2 ton truck lumbering along at 60 mi/hr.
a system of 118.0 moles of an ideal gas in 2.3 m3 has a molar internal energy of u 25.0 kjmol at 1.3 bar. what is the
What solute particles are present in an aqueous solution of NH4Cl? Express your answer as a chemical formula. If there is more than one answer, separate them by a comma. Include charges where necessary.
What is the age of a rock whose Argon 40 / Potassium 40 ratio is 1.55? The half life of Potassium 40 is 1.28 x 10^9 years.
A buffer solution is prepared by adding 1.5 g each of benzoic acid and sodium benzoate in 150.0 mL of solution. what is the pH of the buffer solution
Assume that the kinetic energy of a 1300 kg car moving at 105 km/h could be converted entirely into heat. What amount of water could be heated from 20.°C to 64°C by the car's energy?
find the molarity of an unknown NaOH solution if 0.5536 g of the KHP required 37.00 mL of a NaOH solution.
Given 479.5 g of hot tea at 83.0 *C , what mass of ice at 0 *C must be added to obtain iced tea at 10.5*C? The specific heat of the tea is 4.18 J/g*C, and change in H(fusion) for ice is +6.01 kJ/mol.
The Reaction 2NOCl(g)---->2NO+CL2(g) has rate-constant values for the reaction of NOCl of 9.3x10^-6/s at 350K and 6.9x10^-4/s at 400K. Calculate activation energy for the reaction. What is the rate constant at 435K?
How many possible resonance structures can you draw for SO3 without violating the octet rule for S
If 17.2 mL of 0.800 M hydrochloric acid solution are required to neutralize 5.00 mL of a household NH3 solution, determine the molar concentration of the NH3,ammonia?
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