1.

£ --‘» (८ &प्तत न SAOMPE o PP है. ८53 and 2 ¥ of rofigr fs - कक जे.=L 2९८20) 224४ उड़ी «७4१7 श्र Al e M _7’_—._,.U of coPfey- g

Answer»

(69.2/100)×62.93 + (30.8/100)×64.93

=(43.54)+(19.99)=(63.53)amu

This is atomic mass of naturally occuring sample of copper



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