Question

What is the mass of 12.044× 1023 of he atom

Answer 1

We know in one mole of He atom contains 6.022 × 10^23

So No. of moles present in He = 12.044 × 10^24 /6.022 × 10^24

= 2

So 2 moles of He are present

So mass of He is 8u

Answer 2

since 6.022*10 raised to power 23 atoms of carbon weighs 12gm........

so 12.044*10 raised to power 23 atoms of carbon weighs 24gm....

u may also calc. this as.....

1 mole carbon weighs 12gm... and

12.044*10 raised to power 23 contains 2 mole carbon atoms ...

so 24gm is the ans,

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