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A 1.6192-g sample of neat hydrazine iscarefully dissolved in water and diluted to 1500.0 mL. A 20.00-mLaliquot of this solution is withdrawn and titrated with 27.74 mL of the standard iodine solution. with the standard at 0.03930 M what is the percentage purity of the hydrazine?
a solution of sodium cyanide (NaCN) has a pH of 12.10. How many grams of NaCN are in 425 mL of solution with the same pH
Imagine two solutions with the same concentration and the same boiling point, but one has benzene as the solvent and the other has carbon tetrachloride as the solvent. Determine that concentration and boiling point.
At a local convenience store, you purchase a cup of coffee, but ,at 98.40C, it is too hot to drink you add 23.0 g of ice that is -2.20 C to 248 ml of the coffee. What is the final temperature of the coffee
What is the concentration of HNO3 if 9.20×10?2 mol are present in 825 mL of the solution
The specific heat of copper is 0.092 cal/g oC. Show that the amount of heat needed to raise the temperature of a 10 gram piece of copper from 0oC to 100oC is 92 calories.
The ionic radius of Cs+ = 0.174nm, radius Cl-= 0.181nm, and the coordination number of each ion = 8. Calculate the lattice parameter, 'a', of CsCl, (CsCl is cubic).
Calculate the change in internal energy of the gas in each case of these processes.
Calculate the percent by mass of the solute methylene chloride in a solution produced by combining 0.891 kg of CH2Cl2 to 3.20 kg of the solvent (C2H5)2O.
Initially, .500 atm of H2 and .500 atm I 2 are mixed in an evacuated 1.0 L flask. The system is allowed to come to equilibrium and it is found tocontain 0.368 atm HI. What is the equilibrium partial pressure of I2 for the reaction shown below
HCl (aq) + NaOH (aq) ? NaCl (aq) + H2O (l) A known amount of NaOH is added to a solution containing an unknown quantity of HCl (aq).
First prepare a stock solution that is 1.00 x 10-2 M in phosphate ion. How many g of Na3PO4 would you add to a 100 mL volumetric flask to to prepare this solution. An what is the ppm of phosphate
What mass (in grams) of steam at 100°C must be mixed with 375 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 66.0°
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