Science, asked by brainliestpd, 9 months ago

Which has maximum number of atoms?

(1) 10.8 g of Ag(108)
(3) 5.6 g of Fe(56)
(2) 2.4 g of C(12)
(4) 54 g OF AL
i want with explanations ​

Answers

Answered by AtinSharma
32

Answer:

4) 54g of Aluminum has highest number of atoms.

Here,

n = No. of moles

N = No.of Atoms

m = Mass

M = Molar Mass

N(0) = Avogadro No.

Important Formulas:

n = m/M

N = n x N(0)

Explanation:

1) 10.8g of Ag(108)

No. of atoms = No. of moles x Avogadro No.

=> N = n x N(0)

Since, n = m/M

=> N = (m/M) x N(0)

=> N = (10.8/108) x 6.022 x 10^23

=> N = 0.1 x 6.022 x 10^23

=> N = 0.6022 x 10^23

=> N = 6.022 x 10^22

2) 5.6g of Fe(56)

No. of atoms = No. of moles x Avogadro No.

=> N = n x N(0)

Since, n = m/M

=> N = (m/M) x N(0)

=> N = (5.6/56) x 6.022 x 10^23

=> N = 0.1 x 6.022 x 10^23

=> N = 6.022 x 10^22

3) 2.4g of C(12)

No. of atoms = No. of moles x Avogadro No.

=> N = n x N(0)

Since, n = m/M

=> N = (m/M) x N(0)

=> N = (2.4/12) x 6.022 x 10^23

=> N = 0.2 x 6.022 x 10^23

=> N = 1.2044 x 10^23

=> N = 12.044 x 10^22

4) 54g of Al(27)

No. of atoms = No. of moles x Avogadro No.

=> N = n x N(0)

Since, n = m/M

=> N = (m/M) x N(0)

=> N = (54/27) x 6.022 x 10^23

=> N = 2 x 6.022 x 10^23

=> N = 12.044x 10^23

=> N = 120.44 x 10^22

Therefore,

4) 54g of Aluminum has highest number of atoms.

Answered by DhruvKunvarani
6

✔️ Verified Answer

4) 54g of Aluminum has highest number of atoms.

Explanation:

(1) 10.8g of Ag (108)

N = n × N(A)

= (Wt/M) x N(A)

= (10.8/108) x 6.022 x 10²³

= 0.1 x 6.022 x 10²³

= 6.022 x 10²²

(2) 5.6g of Fe (56)

N = (Wt/M) x N(A)

= (5.6/56) x 6.022 x 10²³

= 0.1 x 6.022 x 10²³

= 6.022 x 10²²

(3) 2.4g of C (12)

N = (Wt/M) x N(A)

= (2.4/12) x 6.022 x 10²³

= 0.2 x 6.022 x 10²³

= 1.2044 x 10²³

= 12.044 x 10²²

(4) 54g of Al (27)

N = (Wt/M) x N(A)

= (54/27) x 6.022 x 10²³

= 2 x 6.022 x 10²³

= 12.044x 10²³

= 120.44 x 10²²

So, it's clearly visible that (4) Al has maximum number of atoms.

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