1.

(i) Calculatethe 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 mg of14C. (Assumethat mass of a neutron = 1.675 × 10–27kg).(iii) Find (a) the total number and (b) the totalmass of protons in 34 mg of NH3at STP. Willthe answer change if the temperature and pressure are changed?

Answer»

(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 mg of
14C.


(Assume
that mass of a neutron = 1.675 × 10
–27
kg).



(iii) Find (a) the total number and (b) the total
mass of protons in 34 mg of NH
3
at STP.


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



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