Question

Va rog dau corona !!​

Answer 1

¹⁶S ; ¹⁷S ; ¹⁸S ; ²⁰S, iar in stanga jos pui la toate 16

a)

Ar = (c1%xA1+c2%A2+...+cn%An)/100

= (95,02x16 + 0,75x17 + 4,21x18 + 0,02x20)/100

= 16,093 u.a.m.

b)

1 mol S .............. 32 g ............. 6,022x10²³ atomi S

                        m g ................. 9,033x10²⁸ atomi S

                      = 48x10⁵ g S sau 48x10² kg S