Question

Which is contains more molecules, 6.35 x 10^23 molecules of sodium hydroxide or 44.32 g of sodium hydroxide?

Answer 1

Resposta:

44,32 g

Explicação:

N=nxNA

NA=constant=6,022 x 10 ^23

We need to know how many molecules are in 44,32g of sodium hidroxide.

M(NaOH)=22,99+16,00+1,01= 40g/mol

n=m/M

<=>n=44,32/40

<=>n=1,108 mol

N = n x NA = 1,108 x 6,022 X 10^23 = 1 x 10^24 molecules

1 x 10^24 > 6,022 x 10 ^23