CBSE Class 9 Answered
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Asked by cikugogoi1999 | 31 Jul, 2019, 12:37: PM
Expert Answer
Que. (K)
Calculate the number of atoms in each of the following:
(a) 0.4 mole of nitrogen
(b) 1.4 gm of sulphur
(a) 0.4 mole nitrogen
We know,
No. of atoms = No. of moles × Avogadro's number
= 0.4 × 6.022×1023
No. of atoms = 2.4088 ×1023
(b) 1.6 gm of sulphur
No. of atoms = No. of moles × Avogadro's number
Molarmass of sulphur = 32
No. of moles of sulphur =
No. of atoms = 0.05 × 6.022×1023
No. of atoms = 3.011 ×1022
Answered by Varsha | 02 Aug, 2019, 11:12: AM
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