Question

va rog ex 2 !! dau coroana . aveti un wxemplu mai sus! multumesc!​

Answer 1

Răspuns:

Explicație:

272 g H2S

M=2+32=34--------> 34g/moli

-se afla nr. de moli din 272g H2S

n= 272g : 34 g/moli=8 moli H2S

1mol H2S----------6,023.10²³molecule

8moli----------------------x

x= 8 . 6,023.10²³= 48,184.10²³ molecule H2S

10,2 kg NH3

10,2 kg= 10200 g NH3

M= 14 + 3=17-------> 17g/moli

n= 10200g : 17 g/moli=600 moli NH3

1mol NH3------------6,023.10²³ molecule

600moli-------------------y

y= 600 . 6,023.10²³= 36,138 .10²³ molecule NH3