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How much dry solute would you take to prepare each of the following solutions from the dry solute and the solvent?
A gaseous mixture of O2 and N2 contains 36.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 685 mmHg.
Calculate the number of mmoles of primary standard grade Na2CO3. b. How many mmoles of HCl reacted with the Na2CO3? c. Calculate the molarity of the HCl solution.
What do understand by the terms a) Empirical Formula b) isomerism and what conclusions can you draw from the following observations about the chemical nature of the organic liquid D?
What is the importance of chemistry to agriculture, Write summary of total one page and include references as well.
How much heat is required to convert 25.0g ethanol at 25C to the vapor phase at 78C? How much to convert 5.00 L?
you have a mixture of oxygen and argon in a 2.50 L container. You know that the oxygen has a mass of 3.44 grams. The total pressure of the gases is 1.86 atm, and their temperature is 22 degrees C.
Calculate the pH for the following cases in the titration of 25.0mL of 0.2M cyanic acid (HCNO, pKa=3.66) with 0.2M RbOH solution
Calculate the de Broglie wavelength of the bullet traveling at 1289 miles per hour. Physical constants can be found here.
What are the roots for x in this quadratic equation? 2 x2 - 7 x + 0.5 = 0 The larger root is (use 3 significant figs) The smaller root is (use 3 significant figs)
Predict what product favored reaction will occur when potassium metal is dropped into liquid water. Write a balanced chemical equation for the process and explain breifly how you made your predicition.
Cadaverine, a fould smelling substance produced by the action of bacteria on meat, contains 58.55% C, 13.81% H and 27.40% N. Its molar mass is 102.2 g/mol.
calculate the parts per thousand deviation in ml. for the three titrations. b) Would an additional titration be advisable? give a reason?
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