A mixture of He, Ne, and N2 gases has a pressure of 1.943 atm. If the pressures of He and Ne are 0.137 atm and 0.566 atm, respec
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Answer:
Plausible structure has been given below
Explanation:
- Molar mass of
is 44 g/mol and molar mass of
is 18 g/mol
- Number of mole = (mass/molar mass)
4.04 g of =
= 0.0918 moles of
1 mol of contains 1 mol of C atom
So, 0.0918 moles of contains 0.0918 moles of C atom
1.24 g of =
= 0.0689 moles of
1 mol of contain 2 moles of H atom
So, 0.0689 moles of contain
of
or 0.138 moles of
Moles of C : moles of H = 0.0918 : 0.138 = 2 : 3
Empirical formula of hydrocarbon is
So, molecular formula of one of it's analog is
Plausible structure of has been given below.
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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