a cafeina, um estimulante bastante comum encontrado no cafe,cha guarana etc, tem formula molecula C8H10N4O2.?

Portanto é correto afirmar que 582g de cafeina cantpem:

a) 10x 6,0 x 10 ²³ átomos de hidrogenio

b) 32g de oxigenio

c)1,44 x 10²5 atomos de carbono

d) 12 atomos de nitrogenio

e) 3 moleculas de cafeina.

ME AJUDEM POR FAVOR!

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