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How much heat is required to change a 38.6 g ice cube from ice at -14.7 deg C to water at 65 deg C?
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How much heat is required to change a 38.6 g ice cube from ice at -14.7 deg C to steam at 114 deg C?
A blank titration of 10mL of similar solution containing no oxalic acid required 0.04mL to exhibit dectectable color. Find the concentration of oxalic acid in the unknown
Using your knowledge of intermolecular forces, polarity, and any other necessary information answer the following question: Why is citric acid insoluble with DCM, ethanol, and ethyl acetate
A sample gas at standard prssure is heated from 20c to 200c. If the volume remains constant. What is the fimal pressure in mmhg
at a particular temperature k 4.0 x 10-7 for the reaction n2o4g ---gt 2no2g. in an experiment 1.0 mol n2o4 is placed
a compound was sent off for elemental analysis and was found to have following composition c 70.6 h 5.9 o 23.5 if the
A 119.6ml sample of 0.110M methylamine (CH3NH2) is titrated with 0.255 M HNO3 . Calculate the pH after the addition of each of the following volumes of acid.
Using extraction techniques how would you separate a mixture of aniline and toluene using dichloromethane as the extraction solvent?
A saturated solution of sodium nitrate contains 80 g NaNO3 per 100 g H2O. How many grams of NaNO3 must be added to a solution containing 25 g NaNO3 in 75 g H2O to make the solution saturated
Calorimetry is a method used to measure changes in enthalpy, or heat, that occur during chemical processes. Two common calorimeters are constant-pressure calorimeters and constant-volume (or "bomb") calorimeters.
A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution after the addition of 150.0 mL of HNO3. The Kb of NH3 is 1.8 × 10-5.
Draw the product obtained when trans-3-octene is treated first with Br2 in CH2Cl2, second with NaNH2 in NH3
If 76.0 mL of .150 M HCL is needed to neutralize all the NH3 from a 2.25-g sample of organic material, calculate the mass percentage of nitrogen in the sample.
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