zadanie w załączniku, proszę o pomoc
1) T=20C ms=220g mw=100g mr=320g
320g r-ru--------220g sub
120gr-ru---------x
x=82,5g subst
T=4C ms=140g mw=100g mr=240g
240g------140g
120g------x
x=70g
Odp po oziębieniu r-ru z 20C do 4C wykrystalizuje (82,5-70=)12,5g soli
2)
T=20C ms=220g mw=100g mr=320g
82,5-70=12,5g
120g r-ru w t=80C ms=12,5g czyli mw= 120-12,5=107,5
100g wody-------x
107,5g wody----12,5g sub
x=11,63g w 100g wody w tem 80C
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1) T=20C ms=220g mw=100g mr=320g
320g r-ru--------220g sub
120gr-ru---------x
x=82,5g subst
T=4C ms=140g mw=100g mr=240g
240g------140g
120g------x
x=70g
Odp po oziębieniu r-ru z 20C do 4C wykrystalizuje (82,5-70=)12,5g soli
2)
T=20C ms=220g mw=100g mr=320g
320g r-ru--------220g sub
120gr-ru---------x
x=82,5g subst
82,5-70=12,5g
120g r-ru w t=80C ms=12,5g czyli mw= 120-12,5=107,5
100g wody-------x
107,5g wody----12,5g sub
x=11,63g w 100g wody w tem 80C