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1. Use the data in Table 8.3 on page 289 in the textbook to calculate an approximate ΔH degrees in kilojoules for the industrial synthesis of ethyl alcohol from ethylene: C2H4(g) + H202 (g) = C2H5OH(G)
C-H 410 H-0 460 C-O 350 C=O 732 O-H 460
2. How much heat is absorbed/released when 20.00 g of NH3(g) reacts in the presence of excess O2(g) to produce NO(g) and H2O(l) according to the following chemical equation?
4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(l)
ΔH° = +1168 kJ
For thousands of years native americans living along the north coast of peru used knotted cotton strands called quipi to record financial transations and governmental actions
Draw the following three Newman projections for the carbon-carbon bond in Br-CH2-CH2-Br (Hint: bromine atom will act much the same as the methyl group in butane, see your notes)
A perfect sphere of aluminum metal with a diameter of 4.56x10^-2 m reacts with 3.80L of 5.25M hydrochloric acid. the products are an aluminum chloride solution and hydrogen gas.
chloride contain 75.27% ag calculatr the mass of silver chloride requiered to plate 215 mg of pure silver
Perform a series of experiments for the reaction A?B+C and find that the rate law has the form rate = k[A]x. Determine the value of x in each of the following cases.
Calculate the number of electrons transferred in the following reaction when it is correctly balanced. C5H8O(g) + O2(g)---> CO2(g) + H2O(l)
Consider the reaction: Cu^2+(aq) + 4NH3 (aq) -> Cu(NH3)4^2+(aq) Kf=2.1 x 10^13 If Ksp for Cu(OH)2 is 2.2 x 10^-20, what is the value of the equilibrium constant, K, for the reaction below? Cu(NH3)4^2+(aq) + 2OH -> Cu(OH)2(s) + 4NH3(aq)
prepare 3.9L of a HCN/NaCN buffer that has a pH of 9.70 and an osmotic pressure of 1.27atm at 298K. What masses of HCN and NaCN should you use to prepare the buffer
Starting with benzene and any alkyl halide with four or fewer carbons and any needed inorganic reagents show how you would synthesized the following compounds: m- bromoiodobenzene,m-flouropropylbenzene,o-nitroaniline,p-methoxyaniline,m-ethylbenzon..
A sodium chloride crystal in a beaker. As water is added the salt dissolves into positive sodium ions and negative chloride ions. Hydration refers to the final state of this process such that the water molecules tend to orient around the ions.
A solid mixture weighing 5 gm consists of lead nitrate as well as sodium nitrate was heated below 600o C until weight of residue was constant. If the loss in weight is 28%, discover the amount of lead nitrate and sodium nitrate in mixture.
the pressure exerted on a 240 ml sample of hydrogen gas at constant temperature is increased from .428 atm to .724 atm.
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