Sc
Example 3.4 Calculate the mass of the
following:
( 0,5 mole of N, gas (mass from mole
of molecule)
(1) 0.5 mole of N atoms (mass from
mole of atom)
(iii) 3.011 % 10% number of N atoms
(mass from number)
(iv) 6.022 % 10% number of N,
molecules (mass from number)
Solutions:
Answers
Answered by
2
(a)Molar mass of N2=14×2=28
no. of moles =given mass /molar mass
0.5=given mass /28
given mass=28×0.5
=14g
(b)Molar mass of N=14g
no. of moles =given mass /molar mass
given mass=0.5×14
=7g
(c)Molar mass of N=14g
no. of atoms=given mass /molar mass ×avagadro no.
given mass=no. of atoms×molar mass /avagadro no.
=3.011×10×14/6.022×10^23
=7×10^-22
HOPE IT WILL HELP YOU. .
Answered by
1
(a)Molar mass of N2=14×2=28
no. of moles =given mass /molar mass
0.5=given mass /28
given mass=28×0.5
=14g
(b)Molar mass of N=14g
no. of moles =given mass /molar mass
given mass=0.5×14
=7g
(c)Molar mass of N=14g
no. of atoms=given mass /molar mass ×avagadro no.
given mass=no. of atoms×molar mass /avagadro no.
=3.011×10×14/6.022×10^23
=7×10^-22
HOPE IT WILL HELP YOU. .
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