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Used in welding metals, the reaction of acetylene with oxygen has ^H0 = -1256.2kj: C2H2(g) + 5/2 O2(g) ---------H2O(g) + 2CO2(g)^H0 + -1256.2kj How much PV work is done in kilojoules and what is the value of ^E in kilojoules for the reaction of 6.50g of acetylene at atmospheric pressure if the volume change is -2.80L?
Identify the largest heat of combustion, small heat of combustion and highest boiling point for: heptane(i), 3-methylhexane(ii), nonane(iii)
a certain monomer used in the production of polymers has one nitrogen atom and the mass composition 67.90 c 5.70 h and
An impure sample of sodium carbonate, (Na2CO3) is allowed to react by dissolving it in an aqueous solution of 0.134 M HCl, according to the following reaction:
250 mL of a NaCl solution is treated with excess AgNO3 and all the Cl- is precipitated as 5.78 g of AgCl. What was the concentration of the original NaCl solution
An 8.00 g sample of SO3 was placed an evacuated container where it is decomposed at 600 degrees C according to the following reaction.
For example if your compound is water and you have the information the boiling point, Tb=(99.98 C), the enthalpy of vaporization= (40.65 kJ/mol) and the molar mass= 18.02g/mol.
The student is supposed to observe the bacterium and make a drawing. However, the student, having just learned about the Heisenberg uncertainty principle in physics class, complains that she cannot make the drawing.
one of the components of the fuel mixture on the apollo lunar module involved a reaction with hydrazine n2h4 and
determine how much water is formed if 30000 grams of c2h2 acetylene burns completely?determine how much heat energy is
The temperature after the reaction is 25.23 C. If the density of final solution is 1.02 g/mL, calculate q, if the specific heat of the solution can be assumed to be equivalent to that of water.
a piece of copper wire is 25 feet long and has a diameter of 2.0mm. copper has a density of 8.92gcm3.a how many mols of
when 2.55 g of an unknown weak monoprotic acid ha molar mass 85.0 gmol is dissolved in 250.0 g of water the freezing
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