Dani has 15.00 grams of water (c = 4.186 ) at 66°c. she adds 40.00 grams of water at 35°c. what is the final temperature of the liquids? express the answer to the hundredths place.

43.45°C

Explanation:

The equation for the final temperature is:

T = (T1*m1 + T2*m2)/(m1 + m2)

Where:

T1 = 66 + 273.15 = 339.15 k

T2 = 35 + 273.15 = 308.15 k

(you need to convert the temperatures into kelvin degrees)

m1 = 15g

m2 = 40g

T = (15g*339.15k + 40g*308.15k)/(15g + 40g) = 316.6k

Returning to the celcius notation:

T = 316.6 - 273.15 = 43.45°C

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the answer would be a