Question

Quantos atomos existem em 500g de NaOH

Answer 1

Massa molar do NaOH = 40 g/mol

40 g -------------- 6,02.10²³ átomos
500 g ------------ x átomos

x = 500 . ( 6,02.10²³) / 40

x = 3,01.10²⁶ / 40

x = 7,52.10²⁴ átomos