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If we have a solution that contains 0.022 M Calcium and 0.014 Magnesium and we have to use potassium hydroxide to selectively precipitate one of the ions, while leaving the other ion in the solution. A) Which metal will precipitate first? ( this metal will be referred to as " first ion") B) What minimum concentration of KOH is necessary to begin precipitation of "first ion" ? C) What molarity of "first ion" remains in solution at the point when the second ion begins to precipitate ? D) As we set up the second trial for this same experiment, we realised that we ran out of potassium hydroxide. All we have in the storage cabinet is potassium carbonate. Would this be a good titrant to use for the selective precipitation? Why or why not ? ( Ksp of Mg(OH)2 = 6.3 *10^-10, Ksp of Ca(OH)2 = 6.5 * 10^-6.
Major Organic Product Formed of Acetyl Chloride Reacting with Reagents, What major organic product would you expect to be formed when acetyl chloride reacts with each of the following reagents?
When steam (hot water) is passed over iron, hydrogen gas and iron (3) oxide are formed. What weight of steam would be needed to react completely with 100.0g of iron.
Find the energy of a photon of light if the wavelength of the light wave is 6.88 x 10-7 m.
Calculate the [H3O+] and the pH for a buffer that consists of 0.13 M HF and 0.29 M KF. (Ka of HF = 6.8x10^-4)
An aqueous solution is 30.0 % by mass ammonia, NH3, and has a density of 0.892 g/mL.The mole fraction of ammonia in the solution is?
In the reaction below, how many liters of CO2 gas are produced from the combustion of 55.0 L of CH4 gas?
Aluminum metal dissolved in hydrochloric acid as follows: 2Al(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2(g)
The equilibrium constant, Kc, for the following reaction is 1.29E-2 at 600 K: COCl2(g) CO(g) + Cl2(g)
If a bottle of nail polish remover contains 150g of acetone, how much heat would be released by its complete combustion?
a solution was prepared by mixing 50 ml of 0.100 M HCl with enough water to get 250 ml solution . what is the M of the final solution of hydrochloric acid?
The atomic weight of Sm is 150.36 and that of Nd is 144.24. The isotopic percentage abundance of 147Sm is 15.0 and that of 144Nd is 23.954.
Calculate the theoretical yield percentage of a reaction between sodium and water, if 25.0 g of sodium react with excess water and if 15.5 L of gaseous hydrogen are collected at NTP conditions.
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