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Find (a) the total number and (b) the to...

Find (a) the total number and (b) the total mass of neutrons in 7 mg of `._C14`
`("Assume that the mass of neutron "= 1.675 xx 10^(-27)kg)`

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(B) (a) 1 g atom of `14C = 14 g = 6.022 xx 10^(23)` atoms`= 6.022 xx 10^(23) xx 8` neutrons.
Thus, 14g or 14000 mg have `8 xx 6.022 xx10^(23)` neutrons
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Total mass of neutrons in 7 mg of .^(14)C is:

Find (i) total number of neutrons, and (II) the total mass of neutrons in 7 mg of C""^(14) (assume that mass of neutron=mass of a hydrogen atom)

The mass of 1 mole of neutrons (m_(n) = 1.675 xx 10^(-27) kg) is: