Răspunsuri

2014-05-11T23:22:31+03:00

din enunt mp-ma=125
ρa=ma/V, V=ma/ρa
V=mp/ρp⇒ma/ρa=mp/ρp,  mp/ma=ρp/ρa, mp-ma/ma=ρp-ρa/ρa, 
ma=625g
V= ma/ρa=625 cm³