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2.2    (iii) Find (a) the total number of protons in 34 mg of NH3 at STP.
Will the answer change if the temperature and pressure are changed ?

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1 mole of ammonia NH_{3} =  17g\ NH_{3} = 6.022\times10^{23}\ molecules\ of\ NH_{3}.

and 1 atom of  NH_{3} contains = 7+3 =10\ protons.

Therefore, the number of protons in 1 mole of NH_{3} = 6.022\times10^{24}\ protons.

Number of protons in 3mg of NH_{3}:=\frac{(6.022\times10^{24}\times34)}{17} \times 1000 = 1.2044\times10^{22}\ protons 

No, there will be no effect of temperature and pressure.

 

Posted by

Divya Prakash Singh

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