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A 0.0989 g sample of an alcohol is burn in oxygen to yield 0.2160 g Co2 and 0.1194 g H2o. Calculate the mass percentage of C, H, and O in the compound Sodium tetrathionate is formed when sodium thiosulfate reacts with iodine. Its composition is 17.01% Na, 47.46% S and 35.52% O by mass. Determine its empirical formula. If the Molar mass of sodium tetrathionate is 272. What is its actual formula? Na2S2O3 + I = NaxSx + 2Nal
To determine the concentration of a 25.0 mL ammonia solution (Kb for NH3 is 1.8 x 10-5), 25.0 mL of 0.200 M HCl solution is used. Calculate the pH of the endpoint.
Why does benzyl alcohol, a primary alcohol, react rapidly in the presence of HCl to form benzyl chloride? If it's primary, shouldn't the reaction be slow?
Use the tabulated data below to calculate x, s, and % RSD using your hand held calculator. Show all of your calculations for full credit.
aqueous solution of sodium chloride (NaCl). What mass of NaCl would you need to dissolve in 500 g of water to make this solution?
a student carried out the experiment but did not follow the directions exacly as written. What effect would the following actions have on the experiment ?
The hydrosylation of polymer A is carried out in the presence the polymer forms a hard gel. if the price of pt is 44$ per gram and the sale price of the hardened polymer is 2000 per ton, what is teh min catalyst TON for an economiclly viable proce..
The entropy of a gas is larger than that of the liquid because the specific volume of gas is greater thus implying more mutual configurations are allowed for molecules in a gas than in the corresponding liquid.
a monoprotic acid with a solution of sodium hydroxide of known concentration, what quantities are equal at the equivalence point
a 1.00 L solution contains 4*10^-4 M Cu(NO3)2 and 1.6*10^-3 M ethyleneddiamine. the Kf for Cu(en)2^2+ is 1*10^20, what is the concentration of Cu+2 in the solution
How many moles of CO(NH2)2 are present in 150 g of water, if the freezing point of the solution is -4.02C? kf(water) = 1.86 K · kg/mol.
how many moles of magnesium oxide are produces by the reaction of 3.82g of magnesium nitride with 7.73g of water? how many grams of excess reactant is left over?
A solution is made by mixing 40.0 mL of ethanol, C2H6O, and 60.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C
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