Question

if one atom of an element X weighs 2.107×10^-22 g, what is the atomic weight of X?

Answer 1

The mass of one atom of an element A = 2.65X10-23 g We know the 1 mole of an atom = 6.023 x 1023 atoms 1 mole of an atom = its atomic mass Mass of one atom of an element A = 2.65X10-23 gMass of 6.023 x 1023 atoms of an element A = 2.65X10-23 X6.023 x 1023  = 15.69 g The element is oxygen 

Answer 2

Answer:

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