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The Ksp of calcium hydroxide, Ca(OH)2, is 5.02 × 10-6. Calculate the solubility of this compound in g/L.
show work on the mineral greenockite is yellow sulfide of cadmium that is 78.0% cadmium and 22.0% sulfur. determine the empirical formula of greenockite.
Adrenaline is a hormone released in response to physical and mental stress. A solution is prepared with 1.5g of adrenaline in 175g. of CCl4 (Tf= -22.3 degrees celcius and Kf = 29.8 C/m.) The freezing point of the solution was determined experiment..
3.5 g of a hydrocarbon fuel is burned in a vessel that contains 250. grams of water initially at 25.00 C. After the combustion, the temperature of the water is 26.55 C. How much heat is evolved per gram of fuel burned?
Offer a reasonable explanation to account for the unequal ratio attained (2% of one isomer and 98% of the other isomer) in the reaction of BH3 (and the solvent diglyme) with 2-methyl-2-butene.
What is the energy difference between the two energy levels involved in the emission that results in this spectral line and calculate the frequency (Hz) and wavelength (nm) of the emitted photon when an electron drops from the n=4 to the n=2 level i..
The absorbance of the unknown solution A=0.4862 +_ 0.0184 abs. units. Determine the un certainty in the concentration of the unknown.
if 2.0 g of helium gas and 5.46 g of oxygen gas are mixed togeher, what is the mole fraction of helium in the solution?
What mass of zinc in grams is required to produce 3.2L of H2 (g) from the following reaction at 78 degrees celcius and 790mmHg? Please explain
Calculate the concentration of the NaOH solution. The reaction between HCl and NaOH is as follows: HCl + NaOH -> NaCL + H20
what is the pH of the hydroflouric acid solution prior to adding sodium fluoride? (b) how many grams of sodium fluoride should be added to prepare the buffer solution? Neglect the small volume change that occurs when the sodium fluoride is added.
What mass of ammonium chloride, NH4Cl, (Ka = 5.6 x 10^-10) must be added to exactly 500mL of 0.10M NH3 solution to give a solution with a pH of 9.00
Find the appropiate equilibrium constant (Kp) for the reaction below under the following conditions.
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