A key difference between the James-Lange theory and the Cannon-Bard theory of emotion is that in the first, physiological change
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Mass perventage of nitrogen in urea, arginine, ornithine is 46.67%, 32.2%,21% respectively.
What is Mass perventage ?
Mass percentage is one way of representing the concentration of an element in a compound or a component in a mixture. Mass percentage is calculated as the mass of a component divided by the total mass of the mixture, multiplied by 100.
Molecular mass of urea (NH2CONH2) is= 2× (Atomic mass of N ) + 4 × (Atomic mass of H) + (Atomic mass of C) (Atomic mass of O) = 60
Mass percentage of N =
chemical formula for arginine is C6H14N4O2
molar mass of C6H14N4O2=174g/mol
moles of N atoms in C6H14N4O2=4
mass of N atoms=14*4=56g
mass percent of N in C6H14N4O2=(56/174)*100=32.2%
the chemical formula for ornithine is C5H12N2O2
molar mass of C5H12N2O2=132g/mol
moles of N atoms in C5H12N2O2=2
mass of N atoms in C5H12N2O2=2*14=28
mass percent of N in C5H12N2O2=(28/132)*100=21%
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