Just looking for someone to check my work on this question before I submit it to the teacher. Any help is appreciated. :)(adsbygoogle = window.adsbygoogle || []).push({});

3. A 0.500 kg pot of hot water for tea has cooled to 40.0 OC. How much freshly boiled water must be added (at 100 OC) to raise the temperature of the tea water to a respectable 65.0 OC?

Let n represent the unknown mass of water to be added.

Starting water + Added water = total water

40c x 0.5 kg + 100c x n = 65 (0.5kg + n)

20 kg + 100 n = (32.5kg + 65n)

52.5 kg = 165 n

1 kg = 3.1n

n = 1/3.1

n = 0.32 kg

To raise the temperature of the tea to 65 degrees, 0.32kg of 100c water must be added.

~Dazed

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Energy to raise temperature of water

**Physics Forums | Science Articles, Homework Help, Discussion**