Question

Calculați numărul de molecule din:490 kg acid sulfuric
44,8 l metan
0,5 kmoli apă
73 g acid clorhidric
224 m cubi dioxid de sulf.

Answer 1

Răspuns:

Explicație:

44,8 LCH4

n= 44,8 L : 22,4L/moli= 2moli CH4

1mol CH4----------------6,022.10²³ molecule CH4

2moli----------------------------x

x= 2 . 6,022.10²³ = 12,044.10²³molecule CH4

490 kg H2SO4 = 490000g

n= 490000g  : 98 g/moli= 5000moli H2 SO4

1mol H2SO4---------------6,022.10²³ molecule H2SO4

5000moli--------------------------y

y= 5000. 6,022.10²³ molecule H2SO4=

0,5kmoli H2O = 500moli H2O

1mol H2O---------------6,022.10²³molecule H2 O

500moli --------------------------z

z= 500. 6,022.10²³molecule H2O=

73 g HCl

n= 73g : 36,5g/moli= 2moli HCl

1mol HCl------------------6,022.10²³molecule HCl

2moli ------------------------------x

x= 2 . 6,022.10²³ molecule HCl=

224m³SO2

n= 224m³ : 22,4 m³/kmoli=10 kmoli SO2= 10000moli SO2

1mol SO2-------------------6,022.10²³molecule SO2

10000moli ----------------------y

y= 10000. 6.022.10²³molecule SO2=