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How much heat is required to change one gram of ethanol ice at 144 degrees C to ethanol vapor at 78 degrees C.
hydrazine n2h4 can be made on paper by reaction of molecular nitrogen and molecular hydrogen2 h 2 g n 2 g --gt n 2
Sodium fluoride is added to many municpal water supplies to reduce tooth decay. Calculate the pH of a 0.00339 M solution of NaF at 25 degrees
Arrange the molecules in order of decreasing boiling point. Rank the molecules from highest boiling point to lowest boiling point.
a sample of steam with a mass of 0.550grams and at a temperature of 100 degrees celcius condenses into an insulated
The air in a laboratory was measured with a barometer to be 7.40 x 102 mm Hg. What is the laboratory air pressure in atm?
What is the concentration of the sodium ion (in M) in a solution of 0.607 M sodium sulfate
In the structure of phosphoric acid, why is it relatively easy to remove the first proton, considerably harder to remove the second proton, and extremely difficult to remove the third proton
what is the molar solubility of hg2c2o4 ksp 1.75x10-13 in 0.34m
along with the weight of sodium acetate (4.01g) and the volume of acetic acid used (10mL) to prepare the buffer, the expected pH of it was 5.43. What is the expected pH of buffer plus added HCl?
A famous foot race in California starts from the bottom of Death Valley (100 m below sea level) and finishes at the top of Mt. Whitney (4300 m above sea level). what percentage does the oxygen number density decrease between the start and the finis..
When treated with nitric acid sugar M forms an optically active diacid, N. Show the structures all compound J-N. Explain your reasoning. If there is a structure of which you are unable to determine the exact configuration, explain why it is imposs..
Calculate the pH of a solution resulting from the addition of 10.0 mL of 0.10 M NaOH to 50.0 mL of 0.10 M benzoic acid (Ka = 6.5 x 10-5)
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