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a 30.0 g sample of water at a temperature of 280.0 k is mixed with 50.0 g of water at 330.0 k. what is the final temperature of the mixture (in kelvin) assuming that no heat is lost to the surroundings? (enter the numerical answer only; do not enter a unit.)

Respuesta :

The final temperature after mixing these solutions will be 311K.

This can be calculated using formula:

q = m⋅c⋅(change in temperature)

−q (lost) = q (gained)

This is equivalent to

−50.0g⋅ (T−330)K = 30.0g⋅ (T-280)K

−50⋅T+16500 =30⋅T−8400

80.0⋅T = 24900

T = 311.25 K

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