Question

Cat mai repede, pls :))

Answer 1

Răspuns:

Explicație:

1.

a.

n= 56 g : 28g/moli= 2 moli N2

1mol N2-----------6,022.10²³molecule

2moli N2-------------------x

x= 2.6,022.10²³= 12,044 .10²³molecule N2

b.

n= 4,48l : 22,4L/moli= 0,2moli NH3

1mol NH3--------6,022.10²³molecule NH3

0,2moli NH3---------------y

y= 0,2 . 6,022.10²³= 1,2044. 10 ²³molecule NH3

c.

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

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

x= 2.6,022.10²³ = 12,044.10²³molecule CH4

2.

a.

n= 67,2 L : 22,4L/moli= 3moli CO2

MCO2= 12+ 2.16=44-------> 44g/moli

m= n . M

m= 3moli. 44g/moli= 132g CO2

b.

MNH3=14 + 3=17------> 17g/moli

m= 3moli . 17g/moli= 51 g NH3

c.

n= 24,088 .10²³ : 6,022.10²³= 4moli N2

m= 4moli . 28g/moli= 112 g N2

3.

a.

VSO2= 5moli. 22,4L/moli= 112 L

b.

n= 50g : 32g/moli = 1,5625 moli O2

VO2= 1,5625moli . 22,4L/moli = 35L