Question

quantas moleculas de gas carbonico, CO2 (g), sao formados na queima total de 2,4.10 23 moleculas de acetileno, c2h2 (g)?

Answer 1

C2H2 + 5/2 O2 ---> 2 CO2 + H2O
6,02.10²³ ------------- 2 . 6,02.10²³
2,4.10²³ ----------------- x
x = 2,4.10²³ . 12,04.10²³/6,02.10²³
x = 2,4.10²³ . 2
x = 4,8.10²³ moléculas