निम्निलिखितमें सेप्रत्येकमेंपरमाणुओंके संख्या ज्ञात कीजिए । (i)52 मोलAr(ii)52 u He(iii) 52 g He ...

(i) 2x-8 = 52

52 u of He contains

Calculate the number of atoms in each of the following (i) 52 moles of Ar (ii) 52 u of He (iii) 52 g of He.

(ii) 4 + 14 + 30 + 52 + 82 + 114 + ...

Add i -47+18 ii (-29)+52

Divide: 3.52 by 100 (ii) 6.25 by 1000

Find the value of the following . (i) 19.72 xx 4 (ii) 0.0745 xx 10 (iii) 3.52 xx 14