Question

Cate grame si cati atomi se gasesc in 3 moli S? Se da As=32
Urgent

Answer 1

1 mol-atomi S cantareste 32 g si contine 6,022x10^23 atomi

1 mol S.... 32 g S .... 6,022x10^23 atomi S

3 moli S... a g S........ n atomi

=> a = 3x32 = 96 g S

=> n = 3x6,022x10^23 = 18,066x10^23 atomi sau

                                        1,807x10^24 atomi S