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Calculate the amount of heat needed to boil 50.6g of ethanol (CH3CH3OH), beginning from a temperature of 24.4C . Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol
what is the molar concentraion of the salt solution formed n this reaction? B. what is the molar concentraion of the excess reactant once this reaction has finished?
Using the inverse square law of radiation, what Geiger counter reading would you get for a radioactive material when you are 3 feet from the source
Suppose that 0.92 of water condenses on a 85.0 block of iron that is initially at 22. If the heat released during condensation goes only to warming the iron block, what is the final temperature (in ) of the iron block? (Assume a constant enthalpy ..
Synthetic polypeptides can assume an helical structure under appropriate conditions. Indicate whether polylysine and polyglutamate form an helix or a disordered structure at the indicated pH values.
What isthe pressure inside of the cylinder in kilopascals at 20 degrees C
On a quantitatively labeled number line, draw where the radial nodes of the 1s, 2s, and 3s hydrogen wavefunctions sit.
Explain which of the following solutions has the weakest interparticle attraction forces : 0.1 M I2 in CH2Cl2(l), 0.02 M NaOH(aq), 0.3 M C12H22O11
Explain the difference between exposure to radioactivity from a source external to the body versus a source that has been consumed and is therefore inside the body.
A solution of ammonia and water contains 4.50×1025 water molecules and 5.30×1024 ammonia molecules. How many total hydrogen atoms are in this solution?
why helpful.source site should show IGC,ILC, Trouble shooting and column packing
Determine whether each anion or cation is acidic or basic or neutral: a. Br- b. ClO- c. C7H5O2- d. Sr2+ e. Mn 3+ f. C5H5NH+
What volume, in Ml of a 1.20 M HCL solution must be diluted in order to prepare 1.00 L of 0.0150 M HCL
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