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When zinc chloride (ZnCl2) reacts with NH3 solution, a white crystalline compound Zn(NH3)nCl2 is produced. A student used the procedure in this molecule to determine the mass percent of NH3 in Zn(NH3)nCl2. the student added 25.0 ml of 0.2500 M HCl solution to an aqueous solution containing 0.3145 g of Zn(NH3)nCl2. The excess HCl required 25.60 ml of 0.1000 M NaOH solution for complete titration. Caluclate the mass percent of NH3 in Zn(NH3)nCl2 based on the student's data
Calculate the pH during the titration of 24.8 mL of 0.736 M HBr(aq) with 0.185 M KOH(aq) after 14.1 mL of the base have been added
If the temperature changes to 81c with no change in volume or amount of gas, what is the new pressure,P2 , of the gas inside the container. Express the pressure numerically in torr.
How would excess solvent affect the melting point. How will impurities affect the melting point.
A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s engine cooling system. If your car\'s cooling system holds 5.80 gallons, what is the boiling point of the solution? Make the following assumptions in your ca..
The density of tungsten is 19.35 g/cm3. A sample of tungsten is placed in a graduated cylinder containing 30.0 mL of water and the water level rises to 34.0 mL. What is the mass in grams of the sample of tungsten?
what is the correct expression for computing the volume of gas at STP and determine What is the mass percent yield from 1.79 g of Sb in excess S, is obtained if 1.14 g of Sb 2 S 3 ?
what are some valid resonance structures for cs2?other than scs can i have s triple bonded to c single bonded to s?
the water level in a graduated cylinder initially at 221 rises to 271 after a piece of lead is submerged. what is the
A solution is prepared by dissolving 0.16mol of acetic acid and 0.16mol of ammonium chloride in enough water to make 1.0 L of solution.
Calculate the equilibrium concentration of Ag+ under these conditions.Ksp for Ag2CO3 is 8.1 x 10-12. Ag2CO3(s, excess)2Ag+(aq) + CO3-2(aq)
depending on temperature, RbCl can exist in either the rock-salt or cesium-chloride structure. What is the coordination number of the anion and cation in each of these structures?
What is the maximum number of grams of NaCl that can be added to 4.0 L of a 0.0090 M lead(II) chloride solution (without changing the volume significantly)
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