Pomoc 2

Submitted by buduci_student on Mon, 06/01/2015 - 19:17
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2. Koliko ima atoma azota u 816 mg amonijum-sulfida? (N=14, S=32)

R: 1,44 *10^22

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milicaradenkovic - Tue, 06/02/2015 - 08:18

n((NH4)2S)=m/Mr=816*10(-3)/68=0.012 mol

n(N)=2*n((NH4)2S)=0.012*2=0.024 mol

N(N)=n(N)*Na=0.024*6*10(23)=1.44*10(22)

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TheBlackWolf - Mon, 03/28/2016 - 09:43

Zasto je n(N)=2n ((NH4)2S)?

 

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milicaradenkovic - Mon, 03/28/2016 - 09:51

Zato sto u aminojum sulfidu imas 2 atoma azota.

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TheBlackWolf - Mon, 03/28/2016 - 10:16

Aa,da hvala puno