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Cholesterol is a compound suspected of causing hardening of the arteries. A 5.02 g sample of cholesterol was analyzed, and the following data was obtained:
carbon 4.21ghydrogen 0.60goxygen 0.21gMM = 386 g/mol
What are the empitical and molecular formulas for the compound?
calculate the molar enthalpy change when mercury is cooled 10 k. the molar heat capacity of mercury is 27.8
A tank containing H2 and O2 develops a pinhole leak. Which gas will leak faster and by what factor H2, 16 O2, 16 H2, 4 O2, 4
Why does LiBr have a stronger lattice energy then LiF Why does NaCl have a higher lattice energy then Mg3N2. ( I thought it would LiF because smaller ion and Mg3N2 because greater charge)
the freonschemical found in many old refrigerators and ac units are a class of compounds containing chlorinecl carbonc
calculate the molarities of solutions that contain the following masses of solute in the indicated volumes a 25.8 g of
What is the molar mass of X if 0.85g of X depresses the freezing point of 100g of benzene by 0.47Cdegrees?
When ethane (C2H6) reacts with chlorine (Cl2), the main product is C2H5Cl, but other products containing CI, such as C2H4CI2, are also obtained in small quantities.the formation of these other products reduces the yield of C2H5CI.
explain in detail, using thermodynamics principles, why the mixing of pure chemicals to form homogeneous mixture is a so-called spontaneous process
a cook wants to heat 1.89 kg of water from 31.0 c to 100.0 c if he uses the combustion of natural gas which is
Calculate the amount of heat energy required to convert 55.0 g of water at 62.5 degrees Celsius to steam at 124.0 degrees Celsius
A sample of pure silver jewelry has mass of 63.3g and is heated to a temperature of 111.4C. It is placed into a container of water at 17C.
Determine the molar concentration of the original acid solution and find pH and a % ionization of the acid in the original solution.
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