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Equations Associated with Enthalpies of Formation
If the heat of formation of H2O(l) is -286 kJ/mol, which of the following thermochemical equations for the formation of H2O is correct?
If the heat of formation of is -286 , which of the following thermochemical equations for the formation of is correct?
H2(g) + O(g) → H2O(g) ΔH=-286 kJH2O(l) → H2(g) + 12 O2(g) ΔH=286 kJ2 H2(g) + O2(g) → 2 H2O(l) ΔH=-286 kJH2(g) + 12 O2(g) → H2O(l) ΔH=-286 kJ2 H(g) + O(g) → H2O(l) ΔH=-286 kJ
Question- If a small cube shape of a diamond was cut and weighs 1.49x10^3 mg, and has sides that cut measure 20.9 mm by 11.1 mm by 12.0 mm, what is the density of the diamond cube in g/cm^3
What is the solubility of Ca(OH)2 in 0.0500 M NaOH assuming both Ideal and Real behavior
lithium iodide has a lattice energy of -720kjmol and a heat of hydration of -793kjmol. determine how much heat is
Lactic acid, C_3H_6O_3, is found in sour milk. A solution containing 1.00 g NaC_3H_5O_3 in 100.0 mL of 0.0500 M C_3H_6O_3 has a pH = 4.11. What is Ka of lactic acid
The pH of a 0.25 M aqueous solution of hydrofluoric acid, HF, at 25.0 °C is 2.03. What is the value of Ka for HF
If 2.0 x 10^23 argon atoms strike 4.0 cm^2 of wall per second at a 90 degree angle to the wall moving with a speed of 450 m/s. what pressure (in bar) does the gas exert on the wall
a 4.50-g sample of licl at 25.0 degc dissolves in 25.0 ml of water also at 25.0 degc . the final equilibrium
when 2-phenyl-2-butene was treated with h2so4 and h2o a compound with molecular formula c20h24 was isolated as a side
Assume you accidently add too much NaOH during the titration. You then add a volume of HCl precisely equal to ½ the volume of NaOH actually utilized in the titration used in the titration. Explain what effect does the have on the Ka
Describe how you will prepare the 1.00 x 10-3 M phosphate solution using the phosphate stock solution provided (1.00 x 10-1 M) to create a 200 mL of 1.00 x 10-3 M phosphate solution.
The plate is 10.00 cm thick (vertical dimension) and covered with water (n = 1.33) to a depth of 11.8 cm. Calculate the apparent thickness of the plate as viewed from above the water. (Assume nearly normal incidence of light rays.)
what is the final mass upon mixing 8.54 mL of HCl and 8.54 mL of NaOH, both solutions have an initial concentration of 2.00 M.
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