Question

7.no .
with steps please anyone
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Answer 1

• Given mass=1.3g
• Atomic mass=65u

Molar mass=65g/mol

Now

`\boxed{\sf No\:of\:moles=(Given\:Mass)/(Molar\:Mass)}`

`\\ \rm\longmapsto No\:of\;Moles=(1.3)/(65)=0.02mol`