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Calcium reacts with sulfur forming calcium sulfide. Explain what is the theoretical yield (g) of CaS(s) that could be prepared from 72.89 g of Ca(s) and 27.44 g of sulfur(s)
What is the molecular formula of the compound 2,3-dimethyl-4-cyclopentyl-5-ethyldecane?
the ionization of water must be considered in order to calculate the pH of this acidic solution.)
The heat of combustion of hexane is 995.0 kcal/mol. How much energy is released during the complete combustion of 453 grams of hexane ?
For the reaction, A(g) + B(g) => AB(g), the rate is 0.579 mol/L.s when the initial concentrations of both A and B are 2.00 mol/L. If the reaction is first order in A and second order in B, what is the rate when the initial concentration of A = 2.3..
An electromagnetic wave of free space wavelength 0.5mm propagates through a piece of indium antimonide that is placed in an axial magnetic field. There is resonant absorption of the elctromagnetic wave at a magnetic field, B = 0.323 wb m-2.
What is the rate constant for the reverse reaction at the same temperature?
Derrick used propane(C3H8) to barbeque during the summer. Please write down the whole combustion reaction and balance the eqation. There are 3.6x10^25 CO2 molecules created, how many grams of oxygen were needed for the reaction
The Ka of phenol, C6H5OH, is 1.00 x 10-10. What is [OH-] in a 0.874 M solution of phenol? Use E notation and 3 significant figures.
a 45-g piece of ice at 0 degrees c is added to a sample of water at 9 degrees c. all of the ice melts and the
degrees Celsius) is placed in 20.6 g of water at 25.00 degrees Celsius. What is tins specific heat if the equilibrium temperature is 47.75 degrees Celsius?
Substances A and B are the same mass and at the same initial temperature. When they are heated, the final temperature of A is 55degree C higher than the temperature of B. What does this tell you about the specific heats of A and B
Explain would the calculated molarity of NaOH be too high or too low If the KHP weighed in your experiment today was contaminated with some unknown inert substance.
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