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Allicin is the compound responsible for the characteristic smell of garlic. An analysis of the compound gives the following percent composition by mass: C: 44.4%; H: 6.21%; S:39.5%; O: 9.86%. What is its empirical formula?
what mass of sucrose should be combined with 508 of water to make a solution with an osmotic pressure of 8.60 at 310 ?
4.00g of H2SO4 solution was diluted with H2O and added with excess of cacl2, and The washed and dried precipitate of BaSO4 weighted 4.08g. Calculate percent H2SO4 in the original acid solution.
If the actual pH of the solution (with added HCl) is 6.73, what are the concentrations of H3PO4, H2PO4-, and HPO4 2-. How many moles of HCl were mistakenly added to the original solution? Write out a balanced reaction for any neutralization reacti..
Calculate Qsp for calcium flouride (Ksp=3.9 x 10^-11) when 230.0 mL of a 0.00790 M solution of Ca(NO3)2 is added to 275.0 mL
If a temperature increase from 11.0degree C to 20.0degrees C doubles the rate constant for a reaction, what is the value of the activation barrier for the reaction
While in Europe, if you drive 107 km per day, how much money would you spend on gas in one week if gas costs 1.10 per liter and your car's gas mileage is 26.0.
Calculate the hydronium concentration for a solution prepared by dissolving 0.15 mol of benzoic acid (C6H5COOH) and 0.30 mol of sodium benzoate (C6H5COONa) in 1.00 L of solution. (Ka of C6H5COOH = 6.5 x 10-5)
Silver metal crystallizes in a cubic closest packed structure. The face centered cubic unit cell edge is 409 pm. Calculate the density of the silver metal.
Draw the Lewis structures for calcium carbonate and magnesium hydroxide.
When ethyl benzoate is heated in methanol containing a small amount of HCl, methyl benzoate is formed. Draw structural formulas for the first two intermediates in this reaction. Indicate the order of formation of the intermediates by drawing a 'Rea..
A 343 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 625 mmHg. Calculate the moles of Ar present.
A reaction in water causes the water in beaker to cool from 25 degrees Celsius to 21 degrees Celsius. The volume of water 150ml (d=1.0g/ml). What is the heat absorbed by the reaction?
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