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A gas undergoes a process that leads to a change in internal energy of 4.5 J, while simultaneously work in the amount of 17.6 J is performed by the gas at constant pressure. Calculate the change in enthalpy of this process.
How would (The weak base sample was impure, containing about 5% inert material) affect the values of Ka for the weak acid unknown and the values of the molar mass for the disodium salt
The mass spectrum of an organic compound shows the relative abundances of M to be 83.79% and M 1 to be 13.59%. Assuming the peaks are caused by 12C and 13C isotopes,
A 12-liter tank contains helium gas pressurized to 160. What size tank would be needed to contain this same amount of helium at atmospheric pressure 1 ATM.
What feature of atomic emission spectra is incorporated in the schrodinger model of the hydrogen atom
compare the purity/identity of the samples from the extraction with the purity of the samples obtained from column chromatography.
Which compound requires a higher energy photon to cause a p to p* (HOMO/LUMO) transition,
The solubility of AgCl (s) in water at 25 C is 1.33 *10^-5 mol/L and its DeltaH of solution is 65.7 Kj/mol. What is the solubility at 68.3 C?
when 7.50g of magnesium reacts with 9.50g hydrochloric acid, hydrogen gas is formed. what is the limiting reagent?
A mixture of acetaldehyde CH3CHO and propanal C2H5CHO under basic conditions
A radioactive sample of 100g has been reduced to 1.56g in 85 years. How long is the half-life?
Otane has a density of 0.692 g/mL at 20°C. How many grams of O2 are required to burn 5.95 gal of C8H18?
How many liters of H_2 would be formed at 704 mm Hg and 14 degrees C if 21.5 g of zinc was allowed to react?
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