Question

750-gram water at 15°C mixed with 1kg water at 95°C. Determine the final temperature of the mixture!

Answer 1

Jawaban:

750 gr = 0,75 kg

Q = m.c.∆T

both of them are water so u can ignore c

0,75 . c . ( T-15 ) = 1 . c . ( 95-T )

0,75T - 11,25 = 95 - T

1,75 T = 95 + 11,25

T = 106,25 / 1,75

T = 60,714285714285 °C

T = 60,7 ° C