Question

cati atomi se gasesc in 2,45g de acid sulfuric (H2SO4)?
se dau AS= 32
AH = 1
AO = 16

Answer 1

Nr moli=>n=m:M

n=2,45g:(2+32+64)g/moli

n=2,45g:98g/moli

n=0,025 moli H2SO4

1 mol H2SO4........6,023×10²³ atomi H2SO4

0,025 moli H2SO4........x atomi

x=0,025 ×6,023×10²³ atomi H2SO4

x=0,150575×10²³ atomi H2SO4