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What is the molar solubility of Fe(OH)3(s) in a solution that is buffered at pH 2.50 at 25 degrees C? The Ksp of Fe(OH)3 is 6.3 x 10^-38 at 25 degrees C.
1. my doctor only measures medicine in scruples. (old unit of mass) If he prescribed 0.382 scruples of medicine, how many milligrams should I ask for at the pharmacy? 1ounce=437.5 grains 1 scruple=20 grains 1ounce=28.35
Use the Ideal Gas Law in the form n=PV/RT. Remember to change all units to correspon to the values for the gas constant. R=0.0821 L*atm/mol*K.
Diethyl ether has a H°vap of 29.1 kJ/mol and a vapor pressure of 0.703 atm at 25.0°C. What is its vapor pressure at 85.0°C?
What is the molecular weight and structure? Also what does this compounds infrared spectrum and NMR spectrum show?
The distribution coefficient, k = (conc. in hexanes/ conc. in water), between hexanes and water for solute A is 7.5 . What weight of A would be removed from a solution of 10g of A in 100mL of water by a single extraction.
a sample of ammonia gas at 1.2 atm compressess from 500 ml to 250 ml. if the temerature remains constant, what is the new pressure of the gas? what formulas were used?
Helium gas at constant pressure of 7.4 atm, expands in volume from 21.3 L to 79.2 L. The temperature is held at 278 K. Calculate the work done by the gas (in joules).
Predict whether each of the following molecules is polar or nonpolar: (a) CCl4 (b)NH3 (C)SF4 (d) XeF4 (e) CH3Br (f) GaH3
a coffee cup calorimeter containing 100ml of 0.30M HCl at 20.3degrees celcius. when 1.82g of Zn solid is added, the temperature rises to 30.5 degrees celcius. what is the heat of reaction per mole of Zn.
Draw the flow of e- and the products of the Methoxide Ion and water including formal charges on all compounds.
Calculating standard enthalpy change, heat, and mass of a reaction, Methanol (CH3OH) is used as fuel in race cars. Calculate the standard enthalpy change for the reaction, assuming H2O(g) as a product.
How do I find the volume of that solution so I can find the concentration of Cl after titration?
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