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The thermal decomposition of ethylene occurs in many industrial contexts: during ethylene transit in pipelines, formation of polyethylene, drying of the gas, and separating it from impurities. The decomposition reaction is as follows:
CH2-CH2(g) → CH4(g) + C(graphite)
If the decomposition of 1 mole of ethylene with a gas density of 0.215 g/mL starts at 12°C and the temperature increases by 950 K, what is the final pressure of the confined gas? (Ignore the volume of graphite and use the van der Waals equation.)
What will be the final temperature of a mixture made from 25.0 g of water at 15.0 degrees C, 45.0 g of water at 50.0 degrees C, and 15.0 g of water at 37.0 degrees C?
Calculate the OH- concentration of a solution that has [H3O+] of 3.5 x 10 -10M. Is the solution acidic, base, or neutral? report answer in two decimal places.
what are the first two ionization energies of calcium and zinc? based on the values which metal would you expect to be
Give at least 5 members (ions) of the same isoelectronic series as neon. Arrange them in order of smallest ionic radius to largest ionic radius.
Consider a steel tank whose volume is 65.0 and which contains gas at a pressure of 16500 at 21.What mass of does the tank contain?
a solution contains chromiumcr3 ion and magnesium mg2 ion. the addition of one litre of 1.55m sodium fluoride solution
Make a corresponding drawing of the CO needed to react completely with the H2. How did you arrive at the number of CO molecules in your drawing? [Section 3.2]
If 2.0 grams of calcium chloride react with 3.5 grams of sodium hydroxide in a double replacement what is the balanced equation
Based on the standard reduction potential, which species is oxidized when current is allowed to flow? B. Calculate the value of Q, the reaction quotient, for this cell reaction. C. Calculate the actual cell potential at 25 degrees C.
a balloon is filled to a volume of 7.00 x 102 ml at a temperature of 20.0 oc. the balloon is then cooled at constant
Calculate the equilibrium constant for the weak base CH3NH2, if a solution of the base with an initial concentration of 4.54×10-2 M has a [CH3NH3+] of 0.00425 M
Estimate the pH, and the concentrations of all species in a 0.300 M phosphoric acid solution. pKa1: 2.16 pKa2: 7.21 pKa3: 12.32 Hint: Convert the pKa values to Ka values
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