If you combine 270.0 mL of water at 25.00 ∘ C and 140.0 mL of water at 95.00 ∘ C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

48.90°C is the final temperature of the mixture.

Explanation:

Mass of water with 25°C temperature = m

Volume of water = v = 270.0 mL

Density of the water = d = 1.00 g/mL

Mass of water with 95°C temperature = M

Volume of water = V = 140.0 mL

Density of the water = d = 1.00 g/mL

Specific heat of water = c

Heat absorbed by water with 25°C temperature = Q

Heat released by water with 25°C temperature = Q'

Final temperature after mixing =

Q = -Q'  ( Law of conservation of heat)

48.90°C is the final temperature of the mixture.

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