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Question- How many moles of oxygen are in a compressed cylinder that has a volume of 8.00 L at a pressure of 14.0 atm and at 25 oC?
Express your knowledge to solve the above question
a 100. ml sample of 0.200 m aqueous hydrochloric acid is added to 100. ml of 0.200 m aqueous ammonia in a calorimeter
prepare 3.9L of a HCN/NaCN buffer that has a pH of 9.70 and an osmotic pressure of 1.27atm at 298K. What masses of HCN and NaCN should you use to prepare the buffer
Why does LiBr have a stronger lattice energy then LiF Why does NaCl have a higher lattice energy then Mg3N2. ( I thought it would LiF because smaller ion and Mg3N2 because greater charge)
Draw the structures of [Co(NH3)6]Cl3 and [Co(NH3)5Cl]Cl2. Explain the difference between the chlorides in [Co(NH3)6]Cl3 and [Co(NH3)5Cl]Cl2.
Hydrochloric acid HCL, completely ionizes when dissolved in water. Calculate the PH of a solution containing
how many grams of sodium acetate must be added to 1.00 L of a .200 M acetic acid solution to form a buffer of 4.20? Ka value for acetic acid is 1.8x10^-5.
Dilute the solutions of NaCl, Na2So4 and Na2S are available to seperate the positive ions from each other. In order to effect seperation, the solutions should be added in which order
At a given temperature, 1.40 atm of H2 and 2.03 atm of I2 are mixed and allowed to come to equilibrium. The equilibrium pressure of HI is found to be 1.305 atm. Calculate Kp for the reaction at this temperature.
Calculate the concentration of Cu in the chloroform phase if 39 mL of a 0.28 M aqueous Cu solution buffered to pH 4 is equilibrated with 12 mL of chloroform.
A 50 mL soln. of Mg(NO3)2 is mixed with a 50 mL solution of NaOH. The resulting precipitate, Mg(OH)2, that forms is 2.97g. Determine the concentration of solution of Mg(NO3)2?
calculate change in gibbs free energy for the reaction cog 12o2g-co2g at 298.15 k. calculate change in gibbs free
Which is more concentrated with respect to sodium ions, 50g of NaCl in 500mL of solution or 59g of Na2SO4 in 500mL of solution
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