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How many atoms are present in 9g of aluminium

Posted by Ayush Shamo 6 years, 9 months ago

CBSE > Class 09 > Science

1 answers

Yogendra Tiwari 6 years, 9 months ago

We know that the atomic mass of aluminium is 27 , so 27 gram is equal to 1 mole i e . 6.022 × 10^ 23 atoms hence 1 gram is equal to 6.022×10^23 / 27 So 9 gram of aluminium is equal to 6.022×10^23 /27 ×9 = 2.007 × 10^ 23.

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