Respuesta :
Answer:
a) The molecular mass of each compound dinitrogen pentaoxide is 108 g/mol.
b) The molecular mass of each compound lead(ll) nitrat is 331 g/mol.
c) The molecular mass of each compound calcium peroxide is 72 g/mol.
Explanation:
a) Molecular mass of dinitrogen pentaoxide that [tex]N_2O_5[/tex] be M.
Mass of nitrogen atom = 14 g/mol
Mass of oxygen atom = 16 g/mol
[tex]M=2\times 14 g/mol+5\times 16 g/mol=108 g/mol[/tex]
b) Molecular mass of lead(ll) nitrate that [tex]Pb(NO_3)_2[/tex] be M.
Mass of lead = 207 g/mol
Mass of nitrogen atom = 14 g/mol
Mass of oxygen atom = 16 g/mol
[tex]M=1\times 207 g/mol+1\times 2\times 14 g/mol+3\times 2\times 16 g/mol=331 g/mol[/tex]
c)Molecular mass of calcium peroxide that [tex]CaO_2[/tex] be M.
Mass of calcium atom = 40 g/mol
Mass of oxygen atom = 16 g/mol
[tex]M=1\times 40 g/mol+2\times 16 g/mol=72 g/mol[/tex]
