Răspunsuri

2014-05-03T10:29:40+03:00
In 4,4⇒4,4supra48=0,09,in44⇒44supra48=0,91,in440⇒440supra 48=9,1

2014-05-03T11:36:14+03:00
X mol CO2........44 g CO2 => x = 1 mol
y moli CO2........4,4 g CO2 => y = 0,1 moli
z moli CO2.......440 g CO2 => z= 10 moli
masa molara CO2=A carbon + 2*A oxigen=12+2*16=44 g/mol => 44 g CO2 la un mol