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if you have water of 330 ml at 25 degrees and then combine water of 130 ml at 95 degrees Celsius temperature, then determine the final temperature of the mixture. (Use 1g/mL as the density of water)
a solid sample containing some Fe+2 ion weighs 1.062g. It requires 24.12mL 0.01562 M KMnO4 to titrate the Fe+2 in the dissolved sample to a pink end point.
determines how many grams of glucose are in 100 mL of the final solution?
Compare the relative greenness of this approach to at least one other extraction method: steam distillation or solvent extraction. List the green chemistry principles that differentiate the two approaches that you compare
ocat standing in front of a blackboard covered with molecular formulas proceeds to explain how it is the citric acid in grapefruit burns up the fat.
The solubility product of Mg(OH)2 is 1.2 x 10-11. What minimum OH- concentration must be attained to decrease the Mg2+ concentration in a solution of MgCl2 to less than 1.0 x 10-9 M.
when steam condenses to h2olliquid water heat of 2.26kj is released per gram. the heat from 168 grams of steam is used
Consider a two state system with a difference in energy of 200 cm^-1. What is the temperature of the system if there are 5 particles in the ground state and 10 in the excited state
Calculate the pH at the equivalence point for the titration of 0.170 M methylamine (CH3NH2) with 0.170 M HCl. The Kb of methylamine is 5.0× 10-4.
A gaseous mixture of O2 and Kr has a density of 1.140 g/L at 415 torr and 300. K. What is the mole percent O2 in the mixture?
What is the silver ion concentration in a solution prepared by mixing 353 ml of .357 M silver nitrate with 425 ml of .494 M sodium carbonate?
calculate the expected pH value of the buffer system 5mL .1M CH3COOH + 5mL .1M CH3COO-Na+ using the henderson-hasselbalch equation using the pKa values: carbonic acid= 6.37 and acetic acid=4.75
Calculate the number of moles of solute present in 50.0mg of aqueous solution that is 1.25 molality NaCl.
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