(i) Calculate the total number of electrons present in one mole of methane. (ii) Find (a) the to...

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(i) Calculate the total number of electrons present in one mole of methane.
(ii) Find (a) the total number and (b) the total mass of neutrons in \( 7 \mathrm{mg} \) of \( { }^{14} \mathrm{C} \). (Assume that mass of a neutron \( =1.675 \times 10^{-27} \mathrm{~kg} \) ).
(iii) Find (a) the total number and (b) the total mass of protons in \( 34 \mathrm{mg} \) of \( \mathrm{NH}_{3} \) at
\( P \) STP.

W. Will the answer change if the temperature and pressure are changed ?
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