помогите какой формула какой ответ плиз
 1) m = 250 грам
 t = 5 C 
 Q -????

2) m= 0,2 кг 
C латунь = 400
t1 = 365 C 
t2= 15 C 
Q ???

3) Q = 84 кДж 
t = 10 C 
m -??????

4) 
Q = 168 кДж 
C вода = 4200 
m= 4 литр 
t =??????

5) 
m = 1 кг 
C свинец =  
t = 100 C 
Q = 13000 дж 
C свинец ??????????????
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