Question

1) CALCULE AS MASSAS
MOLECULARES:


A) H2CO3

B) HNO3

C) Al(OH)3

D) C6H12O6

E) CaCO3

F) Al2(SO4)3

G) C2H5OH

H) K2MnO4

I) ZnSO4

J) (NH4)2CrO7


DADOS: H = 1u C = 12 u O = 16 u N = 14 u Al = 27 u Ca = 40 u

S = 32 u K = 39 u Mn = 55 u Zn = 65 u Cr = 52 u

alguem ajuda ai pfvr​

Answer 1

Resposta:Segue as contas abaixo na explicação

Explicação:

A) H2CO3--->1.2+12.1+16.3--->2+12+48--->62 g/mol

B) HNO3--->1.1+14.1+16.3--->1+14+48--->63 g/mol

C) Al(OH)3--->27.1+16.3+1.3--->27+48+3--->78 g/mol

D) C6H12O6--->12.6+1.12+16.6--->72+12+96--->180 g/mol

E) CaCO3--->40.1+12.1+16.3--->40+12+48--->100 g/mol

F) Al2(SO4)3--->27.2+32.3+16.12--->54+96+192--->342 g/mol

G) C2H5OH--->12.2+1.6+16.1--->24+6+16--->46 g/mol

H) K2MnO4--->39.2+55.1+16.4--->78+55+64--->197 g/mol

I) ZnSO4--->65.1+32.1+16.4--->65+32+64--->161 g/mol

J) (NH4)2CrO7--->14.2+1.8+52.1+16.7--->28+8+52+112--->200 g/mol

J) (NH4)2Cr2O7--->14.2+1.8+52.2+16.7--->28+8+104+112--->252 g/mol