Question

!! macar primele 4 va rog

Answer 1

Răspuns:

Explicație:

a.

1mol Mg-------6,022.10 ²³atomi Mg

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

x= 2 . 6,022.10²³ = 12,044.10²³atomi Mg

b.

1mol Ag---------6,022.10²³atomi Ag

0,5moli Ag-------------y

y= 0,5 .6,022.10²³atomi Ag =

c.

0,5kmoli= 500moli Ag

1mol Ag------6,022.10²³atomi Ag

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

z= 500 . 6,022.10²³atomi Ag =

d.

n = m : M

n= 120g : 12g/moli=10 moli C

1mol C-------6,022.10²³atomi C

10moli ------------a

a=10 . 6,022.10²³atomi C =60, 22.10²³atomi C

e.

120 kg C=  120000g C

n= 120000g : 12g/moli= 10000moli

1mol C----------6,022.10²³atomi C

10000moli-----------------b

b= 10000 . 6,022.10²³atomi C=60220 .10²³atomi C

f.

3,5 g Li

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