A mass of 135 g of a certain element is known to contain 30.1×1023 atoms....

kerrum75

kerrum75

Answered

2021-12-22

A mass of 135 g of a certain element is known to contain
30.1×1023
atoms. What is the element?

Answer & Explanation

twineg4

twineg4

Expert

2021-12-23Added 33 answers

A mass of 135 gram of certain element contain 30.1×1023 atoms.
The number of moles of certain element is given by,
=30.1×10236.022×1023
=5 The mass per mole (atomic mass) of certain is given by,
=1355
=27
From periodic table we can conclude that element having 27 as atomic mass is aluminium
Hence
The element is aluminium

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