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Asoluble iodide was dissolved in water .then excess of silver nitrate,was added to precipitate all the iodide gave ions of siver ioded ,if 1.545g of solluble iodide gave 2.185g of silver iodide,how many grams of iodine are in the sample of solluble iodide?what is the mass percentage of iodine in the comopound.
You are asked to prepare a standard solution of 10.0 mM of valine at pH 5.35 for a biochemistry experiment. The pI of valine is 5.96. What percentage of the valine in the solution is present as the anion
using a sample that is consisting of 1.0 mol of a van der walls is compressed from 20.0dm3 to10.0 dm3 at the
A 10.0-ml sample of house hold ammonia solution required 18.15 ml of 0.320 M HCI to reach neutralization. Calculate(a) the molar concentration of the ammonia and (b) the mass/mass percent concentration of ammonia (17.04 g/mol), given a solution de..
What is the barium ion concentration in a saturated barium fluoride solution made by adding solid BaF2 until no more dissolved
Calculate the pH at the equivalence point for the titration of 0.20 M HCl with 0.20 M NH3 (Kb = 1.8x10-5)
A 4.80 g nugget of pure gold absorbed 298 J of heat. What was the final temperature of the gold if the initial temperature was 24.0°C? The specific heat of gold is 0.129 J/(g·°C).
How much heat is required to raise the temperature of a stainless steel pot weighing 450 g and containing 270 g of water from 25 degrees Celsius to boiling if the specific heat capacity of stainless steel is 0.51 J/(g*degrees C)
solution requires 18.6 mL of 0.200 M NaOH to reach the end point of the titration, what is the molarity of the acetic acid solution? CH3COOH (aq) + NaOH(aq) CH3COONa (aq) + H2O(l)
A sucrose (C12H22O11) solution that is 45.0% sucrose by mass has a density of 1.203 g/mL at 25 C. Calculate its: a. molarity b. molality c.vapor pressure (vp H2O at 25 C=23.76 mm Hg) d.normal boiling point
Which of the following anions is the most nucleophilic in an SN2 reaction? A) h2c=ch- B)ch3ch2- C)ch-triplebonds-C A) B B) C C) A
a 500 gram sample of aluminum pellets specific heat capacity 0.89 jdegrees c x grams 10 gram sample of iron pellets
78 ml of 2.5 m phosphoric acid is neutralized with 500 ml of potassium hydroxide. what is the concentration of the
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