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Question: A student placed 10g of Mg(OH)2 into a flask and added 500 ml of water. The student then took 100 ml of the Mg(OH)2 solution and reacted with HCl(aq). If 13.75 ml of .010M HCL reacted with the OH-(aq), what was the concentration of hydroxide ion in the 100ml solution?
A ten L Dewar containing liquid nitrogen tips over in your car while you are transporting it. If it completely vaporizes what volume of Nitrogen gas will be produced at 1 atm and 20 degrees C
A 15 L flask containing a sample of nitromethane is filled with O2 and the flask is heated to 100 celcius. At this temperture, and after the reaction is complete
0.30 g of hydrogen chloride (HCl) is dissolved in water to make 4.5 L of solution. What is the ph of the resulting hydrochloric acid solution
Calculate the standard enthalpy. of formation of solid Mg(OH)2 using the following thermochemical info: Mg (s) + O2 ---> 2MgO(s) delta H = -1203.6 kj Mg(OH)2 (s) ----> MgO (s) + H2O (l) delta H = 37.1 kj 2H2 (g) + O2 (g) ----> 2H2O(l) delta H = -5..
The rate at which a metal alloy oxidizes in an oxygen containing atmoshphere is a type of the Arrhenius equation (rate(k)=Ce^(-Q/RT)). For example, the rate og oxidation of a magnesium alloy is represented by a rate constant k.
Calculate the pH of the solution made by adding 0.50 mol of HOBr and 0.30 mol of KOBr to 1.00 L of water.
If you fill the larger tank with oxygen to a pressure of 125atm , to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time. Assume ideal behavior for all gases.
The energy required to dissociate the H2 molecule to H atoms is 432 KJ/mol H2. If the dissociation of an H2 molecule were accomplished by the absorption of a single photon whose energy was exactly the quantity required , that would be its wavelend..
100 mL of 0.150 M acid HA are mixed with 100 mL of 0.0800 M NaOH. Calculate the titration constant, kt, of the resulting reaction. Ka = 1.0 x 10-5
Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol. How much potassium nitrate has to dissolve in water to absorb 103kJ of heat?
Sodium stearate (C17H35COONa) is a major component of bar soap. The Ka of the stearic acid is 1.3 multiplied by 10-5. What is the pH of 16.5 mL of a solution containing 0.45 g of sodium stearate
Determine whether the solution formed from the following salts will be acidic, basic or neutral. Write equations for hydrolysis.
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