Question

calculate the mass of 3.011 ×10²³ no. of atoms( mass from no.) ​

Answer 1

Explanation:

we know that,

1 mole of atoms = 6.022× 10 ^23 atoms

so,

6.022x10^23 atoms = 1 mole

1 atoms = 1/6.022×10^23 mole

3.011x10^23 atoms

3.011x10^23 atoms =3.011 ×10^23/6.022×10^23

3.011x10^23 atoms =3.011 ×10^23/6.022×10^23=1/2 mole

3.011x10^23 atoms =3.011 ×10^23/6.022×10^23=1/2 moleand we also know that

1 mole of atom = atomic weight

so,

1 mole of nitrogen= 14 grams1/2 mole of nitrogen = 1/2x 14 =7grams

1 mole of nitrogen.= 14 grams1/2 mole of nitrogen = 1/2x 14 =7gramsso..mass of nitrogen atom = 7grams __ Answer

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Answer 2

Answer:

0.5 moles is the mass of 3.011×10²³ no.of atoms.Ans

Explanation:

no. of mole(molar mass)=3.011×10²³/Avogadro's no.

no. of mole(molar mass)=3.011×10²³/6.022×10²³

=0.5 moles