[tex]dane:\\m = 200 \ g =0,2 \ kg\\Q = 84 \ kJ = 84 \ 000 \ J\\c = 4200\frac{J}{kg\cdot^{o}C}\\szukane:\\\Delta T = ?\\\\Rozwiazanie\\\\Q = c\cdot m\cdot \Delta T \ \ /:(c\cdot m)\\\\\Delta T = \frac{Q}{c\cdot m}\\\\\Delta T = \frac{84 \ 000 \ J}{4200\frac{J}{kg\cdot^{o}C}\cdot0,2 \ kg}\\\\\underline{\Delta T = 100^{o}C}[/tex]
Odp. Woda ogrzeje się o 100°C.