Respuesta :
Explanation:
Mass of compounds = Moles of compound × Molecular mass of compound
a) Moles of LiCl = 2.345 mol
Molecular mass of LiCl = 42.5 g/mol
Mass of 2.345 moles of LiCl = 2.345 mol × 42.5 g/mol = 99.6625 g
b) Moles of acetylene = 0.0872 mol
Molecular mass of acetylene= 26 g/mol
Mass of 0.0872 moles acetylene= 0.0872 mol × 26 g/mol = 2.2672 g
c) Moles of sodium carbonate= [tex]3.3\times 10^{-2}mol[/tex]
Molecular mass of sodium carbonate= 106 g/mol
Mass of [tex]3.3\times 10^{-2}mol[/tex] sodium carbonate
= [tex]3.3\times 10^{-2}mol\times 106 g/mol[/tex]= 3.498 g
d) Moles of fructose = [tex]1.23\times 10^3 mol[/tex]
Molecular mass fructose= 180 g/mol
Mass of [tex]1.23\times 10^3 mol[/tex] fructose
= [tex]1.23\times 10^3mol\times 180 g/mol = 221,400 g[/tex]
e) Moles of [tex]FeSO_4(H_2O)_7=0.5758 mol[/tex]
Molecular mass of [tex]FeSO_4(H_2O)_7 =278 g/mol[/tex]
Mass of [tex]1.23\times 10^3 mol[/tex] fructose
= [tex]0.5758 mol\times 278 g/mol= 160.0724 g[/tex]
