Question

6. A 35-g glass thermometer reads 21.6°C before it is placed in 135 mL of water. When the water and thermometer come to equilibrium, the thermometer reads 39.2°C. What was the original temperature of the water?

Answer 1

How can I figure out the mass of the water (needed for the calculation) if I don't know the temperature?

Answer 2

I'm using the relation \[Q_{1}=-Q_{2}\] and Q=mcT

Answer 3

The specific heats are as follows cwater= 4186 J kg^-1 °C^-1 and cglass = 840 J kg^-1 °C^-1

Answer 4

lol well this should be posted in physics section..

Answer 5

you can be suspended for it..

Answer 6

Sorry, honest mistake I didn't even realize I was in the math section...

Answer 7

If anybody follows this question, here is the link to the one reproduced in the physics section: http://openstudy.com/study#/updates/5084dd90e4b0848fa34f7b78