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Practice entering numbers in scientific notation by entering the diameter of a hydrogen atom in its ground state
A compound is 40.0% C , 6.70% H, and 53.3% O by mass. Assume that we have a 100.-g sample of this compound. The molecular formula mass of this compound is 240 amu. What are the subscripts in the actual molecular formula?
neutral compound show traces of an acid as an impurity wheras the acid might not show any traces of a neutral compound?
Lucite is 71.4% carbon, 9.59% hydrogen, and 19.01% oxygen. What is the empirical formula for Lucite?
One mechanism of fragmentation is loss of a neutral radical by cleavage of a bond from which one electron lost. What is the m/z ratio of the most stable cationic fragment that can be generated from dexchlorpheniramine by this mechanism?
hat conclusions can you make concerning the size of the central atom X and the X-H bond length? Compare the four models of CHBrICI. Are they all the same (superimposable on each other? If the answer is yes, can you construct any that are not the s..
The temperature of the calorimeter increased from 25.4 to 40.2 degrees C. The specific heat is 4.184J/gC and the calorimeter constant is 289 J/C. Determine the specific heat of the glass beads.
Does (CH3CH2)2C=CHCH2CH3 have any cis/trans isomers and if so what are they? Constitutional isomers? Can you sketch
heat is removed from 200.0 g of water with an initial temperature of 30.0°C? The specific heat of water is 4.184 J/gdeg.
A zero-order reaction has a constant rate of 2.40×10-4 M/rm s. If after 80.0 seconds the concentration has dropped to 7.00×10-2 M,
What kinetic energy must the electrons have in order to resolve a protein molecule that is 5.10 nm in diameter? Take the mass of an electron to be 9.11× 10-31 kg.
Determine the amino acid sequence of a heptapeptide from the following data. Briefly explain the meaning of the results in each of the following treatments.
What volume and mass of steam at 100.°C and 1.00 atm would, during condensation, release the same amount of heat as 100. cm3 of liquid water during freezing.
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