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75.0 g of PCl5 (g) is introduced into an evacuated 3.00 L vessel as well as allowed to reached equilibrium at 250 degrees Celsius.
PCl5(g) <---> PCl3(g) + Cl2(g)
Kp=1.80 for this reaction, explain what is the total pressure inside the vessel at equilibrium?
In a certain experiement, 4.6 g Al is reacted with excess oxygen and 6.8 g of product is obtained according to this reaction: 4 Al + 3 O2 --> 2 Al2O3 What is the theoretical yield for this reaction
One type of sunbeam occurs on exposure to yellow light of wavelength in the vicinity of 589 nm. (a) What is the energy of a photon of this wavelength (b). what is the energy of a mole of these photons
Differentiate between the spectral features in the MS, CNMR, HNMR and IR of benzoic acid and methyl benzoate
potassium nitrate has a lattice energy of -163.8 kcalmol and a heat of hydration of -155.5 kcalmol. how much potassium
An aqueous solution of nitrous acid (HNO2) has a ?G= 19.1 kJ. What is the pH when [NO2-]=1.00 M, [HNO2]=1.00 M, and the ?G=0?
Determine the new equilibrium concentration of hydrogen, if the hydrogen concentration is raised by 0.299 M?
Calculate the reversible work required to transport 1mol of K+ from a region where CK+=5.25 mM to a region where CK+=35.5 mM if the potential change accompanying this movement is ?f = 0.055 V. Assume T = 298 K.
Depict a Lewis structure for the molecule O3, including formal charge and resonance. Derived from electronegativity differences, would you expect the O-O bonds in ozone to be polar? It turns out that these bonds are polar what could Define?
Assume the density of the vinegar solution is 1.00 g/mL and 3.5 % by mass acetic acid.
When active metals such as sodium are exposed to air, they quickly form a coating of metal oxide. The balanced equation for the reaction of sodium metal with oxygen gas is
Find H+ and the pH of the following solutions a) .30M HBr b) a solution made by diluting 10.0 mL of 6.00 M HCl to .300 L with water
the half life increased from 2.0 min to 4.0 min at 25C. Calculate the the order of the reaction and the rate constant.
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