Question

determine a massa molecular e a massa molar para as substancias abaixo :
a) Na2SO4.3H2O
b) Ca(NO3)2
c) Na3ALF6
d) c7h5ocl
e) Mg3(PO4)2
f) Fe4(P2O7)3
g) CH3CH2NHCOOH
h)Ag2SO4

Answer 1

a) Massa Molecular = 23x2+1x32+4x16+6x1+3x16=196 u
Massa Molar = 196 g/mol
b) Massa Molecular = 40+2x14+6x16 = 164 u
Massa Molar = 164 g/mol
c)  Massa Molecular = 3x23+27+6x19 = 210 u
Massa Molar = 210 g/mol
d) Massa Molecular = 7x12+5+16+35,5 = 140,5 u
Massa Molecular = 145,5 g/mol
e) Massa Molecular = 3x24+2x31+8x16 = 262 u
Massa Molar = 262 g/mol
f) Massa Molecular = 4x56+6x31+21x16 = 746 u
Massa Molar = 746 g/mol
g) Massa Molecular = 3x12+7+14+2x16 = 89 u
Massa Molar = 89 g/mol
h) Massa Molecular = 2x108+32+2x4x16= 312 u
Massa Molar = 312 g/mol