Cho 40,8g Al2O3 tác dụng với 109,5g dung dịch HCl 20%. Tính C% chất tan dung dịch sau phản ứng

hjjnnbxzgxngdnhjusrua

Explanation:

and yuk

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.

no podemos ver la

explanation:

no te podemos ayudar: /