What is molarity and molailty of the solution
An aqueous KNO3 solution is made using 87.6g of KNO3 diluted to a total solution volume of 1.33L. Density of the solution is 1.05 g/mol. What is its molarity of the solution? molailty of the solution? and mass percent of the solution?
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What volume of 0.200 M K2Cr2O7 would be required to exactly react with 43.9 mL of 0.150 M KI in acidic solution? The products include Cr3+ ion and I2. What was reduced in the reaction and what was the reducing agent?
Determine how to make the following dilutions for aqueous Cu(NO3)2 from 1.0M stock : 0.50M. The 3 and 2 are both in subscript.
How many grams of sodium lactate (CH3CH(OH)COONa) should be added to 1.00 L of .160 M lactic acid (CH3CH(OH)COOH) to form a buffer solution with a pH=3.90? Assume that no volume change occurs when that lactate is added.
Calculate the number of moles of copper oxidized and moles of electrons that passed through the cell. Calculate the total charge (coulombs) that passed through the cell.
When 4g of sodium hydroxide (NaOH) was dissolved in 100g of water, a value of 10C was obtained for ?T. Calculate the value (calories) for the heat of solution of 4g of NaOH.
Calculate the change in entropy (in J/K) when a 67.9 g of water is heated from 14.8 ºC to 74.0 ºC at 1 atm. (The specific heat is 4.184 J/(g-K).)
A. 4.00×10?3 HBr are dissolved in water to make 14.0L of solution. What is the concentration of hydroxide ions,OH^-, in this solution? B. 2.00g of NaOH are dissolved in water to make 2.00L of solution. What is the concentration of hydronium
A single beam photometer with a linear response showed a detector signal of 73.6 uA for a blank solution. Replacing the blank with the sample solution yielded a signal of 24.9 uA. What is the transmittance expected for a sample solution of twice t
Determine the theoretical yield of H2O and the percent yield for the reaction.
In a solution of NH3, the concentration of NH3 is 0.01 M, Kb is 1.8 x 10-5. What is the concentration of the hydroxide ion
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