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The standard heat of combustion of propene, C3h6 g, is -2058kj/molc3h6 g. Use this value and other data from this example to determine ^H for the hydrogeneration of propane to propane
CH3CH=CH2(g) + Hc9g) CH3CH2CH3(g) ^H
The Ka of HNO2 is 7.1 x 10^-4. Use this to find the volume (mL) and pH of 0.0588 M KOH needed to reach the equivalence point(s) in titrations of 28.5 mL of 0.0380 M HNO2.
Write the balanced molecular equation for the combustion of methanethiol in an excess supply of oxygen.
The empirical formula for hydride of silicon is SiH4, and it's central atom is silicon. Based on this information, you would expect the empirical
The process of boiling a reaction mixture and condensing the solvent vapors back into the reaction vessel is known as a)reflux b)filtration c)distillation d)extraction
How many grams of O2 are contained in a 25.0 L sample at 5.20 atm and 28.0°C? 2. How many moles of gas are present in a 10.0 liter sample at STP? 3. How many grams are in 10.0 mEq of Ca2+?
How many grams of lead chromate form when a 1.00-g sample of Pb(NO3)2 is added to 5.0 mL of 1.00 M K2CrO4 solution.
how many grams of sodium chloride would be made if 507 g fecl2 were used up in the reaction fecl2 2naoh feoh2s 2nacl
Calculate the wavelength (in nm) of a photon emitted by a hydrogen atom when its electron drops from the n=5 state to the n=3 state
A colored compound or complex ion provides a preliminary indication of the presence of which of the aluminum Group ions? Give the chemical formula
Nitrogen is contained in a 300 ml vessel at 400 mm Hg and 10°C. How many grams of nitrogen are in the vessel?
A reaction has a standard free-energy change of -12.60 kJ mol-1 (-3.011 kcal mol-1). Calculate the equilibrium constant for the reaction at 25 °C
A first order chemical reaction has a rate constant of 5.8×104 s-1 at 10 °C and a rate constant of 4.7×105 s-1 at 64 °C. Calculate the activation energy, Ea, for the reaction.
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