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Explain how much heat is evolved in converting 1.00 mol of steam at 155.0C to ice at -45.0°C? Explain the heat capacity of steam is 2.01 J/(g⋅°C) and of ice is 2.09 J/(g⋅°C)
If, in a separate experiment, one-four as much enzyme and twice as much substrate had been combined, how long would it take for the same amount (24 ?mol) of product to be formed
Determine what element is getting REDUCED. This reaction is used by the railroads to weld tracks together in remote locations to make the iron to fill the space between tracks. Once the reaction starts, it cannot be stopped and will melt anything ..
Explain what is the pH of a 0.05 M solution of TRIS acid (pka = 8.3)
what total mass of hydrogen is contained in 4.2 g of solution that is 49 hydrogen peroxide h2o2 by mass the balance
What is the pH of a solution made by mixing 25.00mL of 0.200M CH3COOH with 10.00mL of 0.200M NaOH? Ka of acetic acid is 1.8 x 10^-5.
we determined that the sample contained 5.34mol of oxygen. If all of this oxygen were converted to a gas at 24 degrees celcius and 770mmHg of pressure, what volume would it occupy?
The double helix of DNA is partially held together with hydrogen bonds between the complementary bases (A with T and G with C) and partially by base stacking between the aromatic bases.
A 167-L cylinder of helium gas has a pressure of 74.9 atm at 296 K. If 426.2 g of helium are removed from the tank, what is the new pressure of the gas
When 2.56g of a compound containing only carbon, hydrogen, and oxygen is burned completely, 3.84g of CO2 and 1.05g of h20 are produced. What is the empirical formula of the compound
Calculate the final temperature of 204 mL of water initially at 35 degrees C upon absorption of 18kJ of heat.
question assume that the heat lost by the surface is gained by ethyl chloride. what enthalpies must you consider if you
Powdered coal ( essentially pure C ) is reacted with excess water to make a mixture of CO,CO2 and H2 The reaction is desired reaction ,CO2 is an undesired waste product. This gas mixture from the reactions of coal with water is further reacted ove..
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