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An empty flask's mass is 17.4916g, its mass is 43.9616g when filled with water at 20.0c (d=0.9982g/ml). The density of "heavey water" at 20c is 1.1053g/ml. What is the mass of the flask when filled with heavy water at 20.0c
A gas expands and does P-V work on the surroundings equal to 345 J. At the same time, it absorbs 191 J of heat from the surroundings. Calculate the change in energy of the gas.
Write a balanced equation for the neutralization of each of the following. Express your answer as a chemical equation. Identify all of the phases in your answer
What is the theoretical yield (in mg) of sodium bisulfite adduct of cyclohexanone, assuming that you convert all the starting material to it
Determine the wavelength, of an alpha particle with a(KE) kinetic energy of 8.0 10-13 Joules
The fluorescence of the diluted sample solution was found, by the working curve method, to correspond to a salicylate ion concentration of 4.80 x 10^-5 M. Calculate the % acetylsalicylic acid in the aspirin tablet.
The mass of the ice cube is 11.2 g, and its initial temperature is -12.8 °C. The water resulting from the melted ice reaches the temperature of your skin
How does the law of definite proportions help to distinguish between a compound of certain elements
Use metric conversion factors to solve the following problem. A park has an area of 150000 m^2. What is the area in km^2?
To cool a volume of water from 176° K to 100° K, 7.9 x 104 J of heat energy must be removed. What is the volume of water that was cooled?
Chlorine has an average atomic mass of 35.453 amu. The main isotopes of chlorine are 35Cl which has an atomic mass of 34.968 amu and 37Cl, which has an atomic mass of 36.956amu. Given this, what is the percent abundance of each isotope in natural ..
State what are the most common agents in polymer degradation
How many mL Hydrochloric acid of 0.1 M must be added to 100 mL of a 0.2 M solution of tris base to form a buffer ( pH 7.8)?
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