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Problem- When 11.2 g of an unknown, non-volatile, non-electrolyte, X was dissolved in 100. g of water, the vapor pressure of the solvent decreased from 23.8 torr to 23.6 torr at 298 K. Calculate the molar mass of the solute, X.
Please provide the answer of the given question on urgent basis
What is the oxidation number of the monoatomic ions of the following elements. Sr,Rb, Na, Al,O,Se, Ba,I, Fr, Cl, N
A gaseous mixture of O_2 and N_2 contains 37.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 405 mmHg
Choose a more convenient order. (b) Calculate q, w, deltaU, deltaH, and deltaS when the gas changes between the same two conditions
If a 190 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.21.0 , what is the average thickness of the sheet in meters?
The pH of a dimethylamine aqueous solution is 11.98. (CH3)2NH + H2O ? (CH3)2NH2+ + OH-, The dimethylamine solution is 0.146 M a) Calculate the Kb value for dimethylamine.
a 0.421-g sample of asprin prepared in ther laboratory isdissolved in 95 ethanol diluted with water and titrated to
Which of the following compounds exhibits the pattern of m/z values shown below? 41, 43, 57, 87, 101, 116 a. propylbromide b. sec-butyl isopropyl ether c. isopropyl bromide d. 2-hexanol e. 2-butanone
Calculate the enthalpy change associated with the conversion of 25.0 grams of ice at -4.00°C to water vapor at 110.0°C. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K
Complete and balance te following half-reaction. in each case indicate whether the half-reaction is an oxidation or a reduction. 1.Mo^3+(aq)-->Mo(s)(acidic or basic solution)
Calculate the pH for each of the following points in the titration of 50.0 mL of a 1.5 M H3PO3(aq) with 1.5 M KOH(aq)
When extracting caffeine from coffee, is it better to do two extractions with 10 mL of methylene chloride or one extraction with 20 mL of methylene chloride. Why.
your expense account allows you to spend $80.00 a day when you are on a trip. If you have a week-long trip to tiny country of Kratvia, where the exchange rate is 3.50 kratvels per dollar, how many kratvels can you spend during the week? (7 day..
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