Question

Calcule a massa molar (MM) dos compostos abaixo, conhecendo os valores das suas massas atômicas: (H=1, C=12, O=16, N=14, Ca=40, Cl=35,5, K=39, S=32, Cu=63,5, P=31, Ba=137, Sr=88, Al=27).



a) CH4



b) NH3



c) CO2



d) CaO



e) HCl



f) NaCl



g) KNO3



h) CaCl2



i) HClO4



j) H2SO4



k) CuSO4



l) H3PO4



m) Ba(OH)2



n) Sr(OH)2



o) Al(OH)3



p) Al2(SO4)3

​

Answer 1

Resposta:Segue as contas abaixo

Explicação:

a) CH4 -->12x1+x14-->12+4-->16 g/mol

b) NH3 -->14x1+1x3-->14+3-->17 g/mol

c) CO2 -->12x1+16x2-->12+32-->44 g/mol

d) CaO -->40x1+16x1-->40+16-->56 g/mol

e) HCl -->1x1+35,5x1-->1+35,5-->36,5 g/mol

f) NaCl -->23x1+35x1-->23+35,5-->58,5 g/mol

g) KNO3 -->39x1+14x1+16x3-->39+14+48-->101 g/mol

h) CaCl2-->40x1+35,5x2-->40+71-->111 g/mol

i) HClO4 -->1x1+35,5x1+16x4-->1+35,5+64-->100,5 g/mol

j) H2SO4 -->1x2+32x1+16x4-->2+32+64-->98 g/mol

k) CuSO4 -->63,5x1+32x1+16x4-->63,5+32+64-->159,5 g/mol

                    64x1+32x1+16x4-->64+32+64-->160 g/mol

l) H3PO4 -->1x3+31x1+16x4-->3+31+64-->98 g/mol

m) Ba(OH)2 -->137x1+16x1+1x1-->137+16+1-->154 g/mol

n) Sr(OH)2 -->88x1+16x2+1x2-->88+32+2-->122 g/mol

o) Al(OH)3 -->27x1+16x3+1x3-->27+48+3-->78 g/mol

p) Al2(SO4)3-->27x2+32x3+16x12-->54+96+192-->342 g/mol