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Explain how molecular spectroscopy can be used for either the measurement or identification of a molecule. List only one specific type of spectroscopy that would apply for your given answer
Volume after mixing is 131mL. Kf=1.86 C/m -- Kb=0.512 C/m Calculate the freezing point and boiling point?
A 43.0 g sample of ethylene glycol, HOCH2CH2OH, is dissolved in 540.0 g of water. The vapor pressure of water at 32°C is 35.7 mm Hg. What is the vapor pressure of the water-ethylene glycol solution at 32°C ?
What is the mole fraction of ethanol, CH3CH2OH, in an aqueous solution that is 20.0% ethanol by mass? 0.150
When a sample of H2S(g) (9.811 mol) is placed in 180.0 L reaction vessel at 724.0 K and allowed to come to equilibrium the mixture contains 0.01627 mol/L of S2(g). What is the equilibrium concentration (mol/L) of H2S(g)? 2H2S(g) = S2(g)+2H2(g)
A compound of potassium had the following percentage composition: K 44.90%; H 0.5787%; P 17.78%. The rest was oxygen. Calculate the empirical formula of this compound
A gas occupying 28mL at standard conditions is heated to 18C while the pressure is reduced to 0.98221 atm. What is the new volume occupied by the gas? Answer in units of mL.
The equation for the reaction is 2 NH3 + 3 O2 + 2 CH4 ----> 2 HCN + 6 H2O, What is the percent yield of HCN?
calculate the value of ?Horxn for the following chemical equation: N2H4(l) + O2(g) ? N2(g) + 2 H2O(g)
Calculate the number of moles in each of the following quantities.a) atoms of each element in 3.35 moles of aspirin(C9H8O4)
A 15.8 g sample of a nonelectrolyte was dissolved is 104.0 g of water. The solution's freezing point was -1.9°C. What is the molar mass of the unknown compound?
Write out the mechanism for the oxime formed from 2-butanone and hydroxylamine under acid catalyzed conditions.
Calculate the minimum chloride ion concentration needed to initiate precipitation of PbCl2 from a solution that contains 0.01M Pb^2+ (aq).
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