Question

OBLICZENIA MOLOWE :

oblicz masę 2 moli NaOH

masę 0.5 mola H2O

masę 3 moli H2SO4

objętość 2 moli SO2

objętość 0,5 mola CO2

Ile to moli 160g NaOH

44,8dm3 CO

11,2 dm3NO

Answer 1

M NaOH=40g/mol

40g NaOH----1mol

xg NaOH------2mole

x = 80g NaOH

 

M H2O=18g/mol

18g H2O------1mol

xg H2O--------0,5mola

x = 9g H2O

 

M H2SO4=98g/mol

98g H2SO4------1mol

xg H2SO4-------3mole

x = 294g H2SO4

 

1mol SO2-----22,4dm3

2mole SO2------xdm3

x = 44,8dm3 SO2

 

1mol CO2--------22,4dm3

0,5mola CO2------xdm3

x = 11,2dm3 CO2

 

M NaOH=40g/mol

40g NaOH-----1mol

160g NaOH-----xmoli

x = 4mole NaOH

 

1mol CO-----22,4dm3

xmoli CO-----44,8dm3

x = 2mole CO

 

1mol NO-----22,4dm3

xmoli NO-----11,2dm3

x = 0,5mola NO