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At 20° C, an aqueous solution that is 24.0% by mass in phosphorus pentachloride has density of 2.1 g/cm3. Assume 100 g total solution. what is the molarity of PCl5 in a solution?
Under standard-state conditions, what spontaneous reaction will occur in aqeuous solution among the ions
a solution of ammonia and water contains 1.60times1025 water molecules and 7.00times1024 ammonia molecules. how many
The vapor pressure of benzene is 53.3 kPa at 60.6°C, but it falls to 51.5 kPa when 19.0 g of a nonvolatile unknown organic compound is dissolved in 500 g of benzene. Calculate the molar mass of the compound.
How would the presence of a double or triple bond help to determine the geometric shape of a molecule?
If two compounds have Rf values of 0.78 and 0.32, how far will they be separated from each other on a plate when the solvent front is developed to: (a) 5 cm? (b) 15 cm
Marble is composed of CaCO3. CaCO3 can be made from the reaction of CaO with CO2, How many pounds of CO2 are locked up in 50 Ib of marble
All of the following are substrates or intermediates in the synthesis of phosphatidylinositol EXCEPT
A soluble iodide was dissolved in water. Then an excess of silver(I) nitrate, AgNO3 was added to completely precipitate out all the iodide ion as silver(I) iodide, AgI. if 1.545 grams of soluble iodide gave 2.185g of silver(I) iodide, then
Ammonium hydrogen sulfide decomposes on heating NH4HS(s) NH3(g) + H2S(g) If Kp for this reaction is 0.11 at 298 kelvins (with pressures in atmospheres)
Recrystallization from 95% ethanol gave yellow crystals. What is the overall mechanism for this reaction including all arrows, the identification of the electrophile and nucleophile, and all charges?
What is w when a gas is compressed from 38.3 L to 28.8 L using a constant external pressure of 745 mmHg? (Remember to include a "+" or "-" sign as appropriate.)
when 0.625 g of ca metal is added to 200.0 ml of 0.500 m hclaq a temperature increase of 102c is observed. assume the
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