Question

number of atoms in 1.6 grams of Methane

Answer 1

molecular mass of methane =mass of C +4(mass of H)
= 12+4
=16g

by Avogadro s law we know
1 mole ----> 6.022*10^23 atoms
16g-------> 6.022×10^23 atoms
1.6g------> 6.022* 10^23 /10 atoms
= 6.022×10^ 22 atoms



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