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If a 1.00g sample of a carbon-containing compound is burned in air, 0.75g of CO2(the only carbon-containing product) is produced. What is the mass% carbon in the compound?
Calculate the wavelength in picometer of gamma ray radiation whose frequency is 9.74 × 1019 Hz. Express answer in scientific notation.
A mixture of ethanol and 1-propanol behaves ideally at 36 C and is in equilibrium with its vapor. If the mole fraction of ethanol in the solution is 0.63, calculate its mole fraction in the vapor phase at this temperature.
an archaeological sample contains 0.743g of lead -206 and 2.145g of uranium - 238. Assume that all the lead now present in the rock came from the radioactive decay of the uranium and that no appreciable amounts of other radioactive nuclides are pr..
A medical patient has the ball section of his femur replaced with a titanium implant. Assuming the implant is a perfect sphere with a radius of 1.5 inches
Using the van der Waal constants for methane in table 1.3 (a=2.283, b=0.04278) to calculate the initial slopes of the plots of the compressibility factor
The double-replacement reaction below results in the formation of the precipitate lead chloride. Balance the equation and write the net ionic equation.
A hypothetical metal has a body-centered cubic unit cell and a density of 3.229 g/cm3. The molar mass of the metal is 114.8 g/mol. What is the atomic radius of this metal
Br2 and ICl have similar molecular weights which compund has a higher boiling point specifically expalin your answer
solution made from 6.50g of an unknown compound in 27.8g of diphenyl has a molality of .195m. Calculate the molar mass of the unknown.
Calculate the PH of this solution.
the enzyme acetylcholinesterase,which has a turnover rate of 25,000 s-1. Calculate how long it takes the enzyme to cleave one acetylcholine molecule.
Explain what will happen when the Ag/AgCl gel of an ECG electrode used to monitor a patient in the ICU dries
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