Grade 12Magical Mathematics[Interesting Approach]
One atom of an element X weighs 6.644×10^-23 g . Calculate the no. Of gram-atoms in 40kg of it.
1 Answer
Vikas TU
Weight of 1 atom of element = 6.644 x 10-23 g
Weight of 6.023 X 1023 atoms of elements = 6.644 x 10-23 x 6.023 X 1023 = 40 g
40 g of elements = 1 g- atom
40 x 103 g of element = 40 x 103 /40 g = 103 g-atom
Weight of 6.023 X 1023 atoms of elements = 6.644 x 10-23 x 6.023 X 1023 = 40 g
40 g of elements = 1 g- atom
40 x 103 g of element = 40 x 103 /40 g = 103 g-atom
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